Lethal removal of cats backfires (again)

“I suppose it is tempting, if the only tool you have is a hammer, to treat everything as if it were a nail.” —Abraham Maslow

Just three months after an intensive culling effort, conservationists observed no difference in the area’s population of cats. Nevertheless, they describe their campaign as “effective,” arguing that lethal methods could be improved only if they were more “intense and continuous.”

Non-lethal methods, it seems, never occurred to them. Read more

Bad Medicine

Between 1979 and 2015, more than 13,000 U.S. veterinarians died. At least 398 of them took their own lives. Which, according to recently published research, is 2.1 (for males) to 3.5 (for females) times higher than the suicide rate nationally. Those working with companion animals (as opposed to, say, “food animals”) were among veterinarians most likely to die by suicide [1].

Unfortunately, the study provides no breakdown for shelter medicine vets, who generally see more killing than any of their colleagues other than perhaps those working with the aforementioned “food animals.” It’s not difficult to imagine higher rates of suicides among these veterinarians, certainly—but let’s set that aside for the moment and assume it’s no different from the overall rate for companion animal vets.*

What would happen if TNR opponents had their way—and the killing of healthy cats increased by a factor of 10, 20, or more?  Read more

TNR Opponents’ Reaction(?) to the Recovery of the California Sea Otter

Photo: Wikipedia/Michael L. Baird

For several years now, TNR opponents have blamed Toxoplasma gondii infection in California sea otters on outdoor cats, the idea being that the parasite is spread from cat feces into the soil and then flushed into the Pacific by way of runoff. From the start, it’s been a dubious argument—requiring believers to focus narrowly on specific data while ignoring a great deal more.

And the argument has only grown increasingly weak in recent years, as additional research findings have further questioned the role of domestic cats in sea otter infection. Perhaps most compelling of all are the results of the 2016 sea otter census, which estimates that the population along the California coast might be greater than it’s been in more than 100 years.

So how do TNR opponents reconcile these findings with their claims that outdoor cats pose a grave threat to the sea otters?

They don’t, of course.

Instead, they simply ignore the research—all the while telling anybody who will listen that they have science on their side. Read more

Is the CDC Ignoring Science When it Interferes with a Cozy Relationship?

When does collaboration cross the line into research misconduct? And why is it bad for public policy, cats, and people care about both of them?

Back in August of 2013, I wrote a post asking whether the Centers for Disease Control and Prevention was doing the American Bird Conservancy’s bidding. As should be obvious, the question was intended to be provocative. As it turns out, though, it was also more than a little prescient.

Documents obtained through Freedom of Information Act requests reveal a pattern of questionable behavior from CDC epidemiologist Jesse Blanton, whose cozy relationship with various ABC staff resulted in the publication—and extensive promotion—of a paper that’s become one of the go-to tools in TNR opponents’ arsenal (see Note 1).

And yet, despite its glaring flaws and dubious origins—which together raise serious questions about research misconduct—both the CDC and John Wiley & Sons (publisher of Zoonoses and Public Health, the journal in which the paper appeared) have been eager to dismiss concerns over this poster-child for publicly funded junk science. Read more

“The Science Points to Cats”? Not so Fast!

Mother sea otter with pup, photographed at Morro Rock, CA. Photo courtesy of Wikimedia Commons and “Mike” Michael L. Baird.

“The science points to cats,” proclaimed David Jessup (long-time opponent of TNR) and Melissa Miller in their contribution to the Spring 2011 Issue of The Wildlife Professional, in a special section called “The Impact of Free Ranging Cats” (available free via issuu.com). As I explained at the time, it wasn’t science so much as certain scientists pointing to cats as the primary cause of California sea otter mortalities associated with Toxoplasma gondii infection.

And now, a study recently published in the International Journal for Parasitology: Parasites and Wildlife goes much further in challenging the scapegoating. Read more

11 Signs of the American Bird Conservancy’s Desperate Struggle for Relevance

As most readers are undoubtedly aware, today is National Feral Cat Day. And at the risk of stating the obvious: NFCD has clearly become, to borrow a trendy phrase from social media, “a thing.” Now in its 14th year, there are hundreds of events going on around the country to mark the occasion.

All of which must be terribly frustrating for TNR-deniers. Thus, their increasingly desperate attempts to oppose, any way they can, TNR and community cat programs.

Witness, for example, Cats, Birds, and People: The Consequences of Outdoor Cats and the Need for Effective Management (PDF), a presentation by Grant Sizemore—who may or may not be the American Bird Conservancy’s Director of Invasive Species Programs. (As we’ll see shortly, it’s surprisingly complicated.)

It’s not clear exactly who these 33 slides are intended to help. After all, to anybody even remotely familiar with the issue, it’s immediately apparent that Sizemore’s claims—the “consequences” mentioned in the presentation’s title—are flimsy at best.

Equally apparent: Sizemore and ABC are not—though ABC’s been on this witch-hunt for 17 years now—about to provide any solutions.

Not only is the presentation available on ABC’s website, Sizemore’s now taking the show on the road. Last month, for example, he was in Ellenton, Florida, as part of a Coyotes and Feral Cats forum, hosted by the Suncoast Cooperative Invasive Species Management Area.

No doubt, most readers will miss such opportunities. Here, then, are 11 of the presentation’s “highlights”—my humble gift on National Feral Cat Day 2014. Read more

You Can’t Get There from Here: A Response to Lohr and Lepczyk

The following comments were submitted by Frank Hamilton, president of the Animal Coalition of Tampa, Martha Girdany of the Kauai Community Cat Project, and myself, in response to Conservation Biology’s publication of “Desires and Management Preferences of Stakeholders Regarding Feral Cats in the Hawaiian Islands.”

Unfortunately, our critique of this badly flawed work was rejected by the journal. As editor-in-chief Mark Burgman explained, “the reviewers and handling editor have substantial concerns … the reviewers noted important and consistent concerns, the most significant of which is that the methodological issues raised in the comment were not sufficient to warrant publication.” Not surprisingly, my co-authors and I strongly disagree, and regret that Cheryl Lohr and Christopher Lepczyk were not required to defend their work (a trivial undertaking if, as the reviewers suggest, our concerns were off-base or overblown).

One often hears that science is self-correcting. The present case, however, supports the assertion, made in a 2012 Atlantic article, that self-correcting science is largely a myth.

•     •     •

In “Desires and Management Preferences of Stakeholders Regarding Feral Cats in the Hawaiian Islands,” authors Cheryl Lohr and Christopher Lepczyk [1] report, based on their analysis of survey results, that “live capture and lethal injection was the most preferred technique and trap-neuter-release was the least preferred technique for managing feral cats” in the Hawaiian islands. As we will demonstrate, however, a variety of flaws with the authors’ survey, sampling, and analysis undermine these claims. The study’s shortcomings, both technical and philosophical, are too numerous to address here; we will focus our attention, therefore, on the factors that contribute most significantly to Lohr and Lepczyk’s results, conclusions, and recommendations. Read more

Thinking Inside the Box

It’s difficult to determine how these things get started—how the results of a well-documented experiment conducted nearly 40 years ago become twisted into the frequently made—and widely-accepted—claim that “even well-fed cats hunt.”

This would appear to be a case of validity through repetition: repeat a claim often enough and, eventually, people will come to believe it’s true—never bothering to check the original source. (Pro Tip: For added efficacy, click the heels of your ruby-red slippers together while repeating the claim.)

This, it should go without saying, is not how science is supposed to work. Read more

The Call for More Killing

By the time readers had the print version of last week’s Washington Post Magazine in their ink-stained hands, the online version of its cover story, “Is it more humane to kill stray cats, or let them fend alone?,” had already been revised.

Julie Levy, director of Maddie’s Shelter Medicine Program at the University of Florida,” reads the original, “estimates between 71 percent and 94 percent of the cat population must be neutered to bring the birth rate below replacement level.”

“In addition to TNR, she says, caregivers need to stop feeding free-roaming cats and keep pet cats inside for there to be ‘a humane, gradual reduction in cat numbers.’ At one university campus she studied, the feral cat population was reduced from 155 in 1991 to 23 in 2002 through a combination of adoption, euthanizing sick cats, natural attrition and neutering ‘virtually all resident cats.’” [1]

Sometime between Thursday, when the online version was posted, and Sunday, the second sentence disappeared from the Post website. Read more

CDC Doing the American Bird Conservancy’s Bidding?

Representatives of the Centers for Disease Control and Prevention sign on to the American Bird Conservancy’s witch-hunt against free-roaming cats, misrepresenting the relevant science to support their claim that “rabies transmission via feral cats is a particular concern.”

“Feral cat populations,” argue the authors of a recently published paper, “must be reduced and eliminated to manage the public health risk of rabies transmission.” [1] Their solution? “Traditional animal control policies [that] have stressed stray animal control and removal.”

It’s no surprise, given the American Bird Conservancy’s contribution (president George Fenwick is among the paper’s seven co-authors, and Steve Holmer, Bird Conservation Alliance director, is thanked in the acknowledgments for his “review and input during the writing of the manuscript”) that the article provides no evidence whatsoever of such policies and practices reducing the risk of rabies posed by free-roaming cats.

Witch-hunts, after all, have little use for evidence.

But the Centers for Disease Control and Prevention and U.S. Department of Agriculture, representatives of which make up the paper’s other six co-authors,* rely on solid evidence to develop sound public policy.**

Don’t they?

To borrow a line from Ernest HemingwayIsn’t it pretty to think so?

Read more

Natural Selection, Pronto!

Cliff swallows (Petrochelidon pyrrhonata) in Cayucos, CA. Photo courtesy of Wikimedia Commons and Marlin Harms.

Swallows evolve shorter wings to avoid cars, study suggests.

Over the past few years, I’ve grown increasingly skeptical of such headlines. Still, sometimes the research really does live up to the media hype. This would seem to be the case here, in an NBC News story about the recently published work of Charles Brown and Mary Bomberger Brown.

Collecting and studying the “salvageable specimens” of cliff swallows killed along the roads surrounding southwestern Nebraska’s Cedar Point Biological Station over the past 30 years, Brown and Brown found the numbers of road-killed birds “declined sharply.” [1] And the trend couldn’t be explained by the population of swallows living nearby (which increased over the study period), traffic volume (which “either did not change significantly or increased, depending on the metric used”), or the number of avian scavengers in the area (“as none showed significant increases in our study area”).

“Thus, none of the obvious factors that confound most road-kill surveys applied to our study,” explain the researchers in the most recent issue of Current Biology. [1]

So why the decrease in swallow mortalities? Read more

The American Bird Conservancy’s Campaign of Killing

“The only sure way to protect wildlife, cats and people is for domestic cats to be permanently removed from the outdoor environment,” argues American Bird Conservancy president George Fenwick in a Baltimore Sun op-ed published earlier this week.

“Trap-neuter-release programs that perpetuate the slaughter of wildlife and encourage the dumping of unwanted cats is [sic] a failed strategy being implemented across the United States without any consideration for environmental, human health, or animal welfare effects. It can no longer be tolerated.”

“Evidence” of the slaughter, Fenwick suggests, can be found “in a long line of scientific studies”—among them the Smithsonian/USFWS “killer cat study,” Rick Gerhold and David Jessup’s “Zoonotic Diseases” paper, Peter Marra’s gray catbird study, and Kerry Anne Loyd’s “KittyCam” research. The trouble, of course, is with the quality of Fenwick’s evidence—or in the case of Loyd’s work, how badly it’s been misrepresented by Fenwick and ABC.

But let’s face it: a witch-hunt is a much easier sell when you can put some “science” behind it. And, although too few Sun readers probably realize it, that’s exactly what Fenwick’s up to: Read more

2012 Trap Liner Award

“Like so many others of my tenure and temperament—stubborn ancients, I suppose—web reporting is anathema to everything I love about newspapering: getting a tip, developing leads, fleshing-out the details, then telling the story.”

“Now,” laments former Times-Picayune reporter Chris Rose in the August issue of the Oxford American (excerpted in the current issue of Utne), “it stops with the tip. Just verify (hopefully!) and post it. I didn’t write stories anymore; I ‘produced content.’”

Perhaps this emphasis on “web reporting” explains the largely pathetic coverage surrounding the free-roaming cat/TNR issue. There’s probably not even a tip in many cases, just a press release.

Whatever the cause, the effect (in addition to a misinformed public, misguided policy, etc.) is a very competitive field for the 2012 Trap Liner Award. Read more

The Outdoor Cat Conference: Wrap-Up

Putting on any conference is a tremendous undertaking. But the challenges involved in pulling together The Outdoor Cat: Science and Policy from a Global Perspective went far beyond the logistics of wrangling 20-some speakers and 150 or so attendees. For starters, there was deciding who should (and should not) be invited to present. (More on that shortly.) And then there’s the fact that, no matter what happens, you’re bound to be criticized.

There’s simply no way to get something like this completely right, no matter who’s in charge or how much planning goes into it.

And so, I give a lot of credit to the people involved—who knew all of this, and did it anyhow. Those I know of (and I’m sure to be leaving out many others, for which I apologize) include John Hadidian, Andrew Rowan, Nancy Peterson, Katie Lisnik, and Carol England from the Humane Society of the United States; and Aimee Gilbreath and Estelle Weber of FoundAnimals. Many of you told me, very modestly, that this conference was “a start.”

Fair enough, but it’s a very important one. Five or 10 years from now, we might look back and call it a milestone.

Here, then, are some snapshots of the various presentations (in the order in which the they were given). Read more

War on Nature, War on Cats

In Nature Wars, to be released next week, award-winning journalist Jim Sterba argues that it’s time for Americans to reconnect with nature—and what better incentive than a massive lethal control campaign against any number of plants and animals, including feral cats? His book reflects attitudes that are out of step with contemporary culture, and a rationale that’s not supported by the science. As the song says: War! What is it good for? Absolutely nothin’…

“People have very different ideas regarding what to do, if anything, about the wild creatures in their midst,” writes Jim Sterba in his new book Nature Wars: The Incredible Story of How Wildlife Comebacks Turned Backyards Into Battlegrounds, “even when they are causing problems.”

“Enjoy them? Adjust to them? Move them? Remove them? Relations between people and wildlife have never been more confused, complicated, or conflicted.” [1]

Agreed. And I largely agree with Sterba’s diagnosis: “Americans have become denatured.”

“That is to say, they have forgotten the skills their ancestors acquired to manage an often unruly natural world around them, and they have largely withdrawn from direct contact with that world by spending most of their time indoors, substituting a great deal of real nature with reel nature—edited, packaged, digitized, and piped in electronically.” [1]

So what’s the solution? Here, Sterba and I part company. Read more

Free-Roaming Cats, Infectious Diseases, and the Zombie Apocalypse

A recently published paper describing free-roaming cats as “a significant public health threat” fails to deliver convincing evidence. In fact, the very work the authors cite undermines, time and time again, their claims.

“Domestic cats are a potential source of numerous infectious disease agents,” write Rick Gerhold and David Jessup, in their paper, “Zoonotic Diseases Associated with Free-Roaming Cats,” published online in July by the journal Zoonoses Public Health (and to be included in an upcoming print edition).

“However, many of these diseases are controlled in cats belonging to responsible owners through routine veterinary care, proper vaccination regimens and parasite chemotherapy. Free-roaming cats often lack the necessary preventative care to control these diseases and consequently pose a potential health threat to other domestic animals, wildlife and humans.” [1]

Just how much of a threat do these cats pose?

Gerhold and Jessup would have us believe that the risks are high and the consequences dire. A careful reading of their paper, however, reveals the authors’ tendency to cherry-pick some studies and misrepresent others. And, occasionally, simply get their facts wrong.*

All of which raises serious questions about Gerhold and Jessup’s case against free-roaming cats. Read more

Serious Public Health Issues? Seriously?

Culex quinquefasciatus mosquito. Photo courtesy of Wikimedia Commons and CDC/Jim Gathany.

“This is a significant study that documents serious wildlife and public health issues associated with 125 million outdoor cats in the United States,” explained the American Bird Conservancy’s vice president for conservation advocacy, Darin Schroeder, in a September 18 press release. [1] Schroeder was referring to a paper (“a review of the various diseases of free-roaming cats and the public health implications associated with the cat populations,” [2] as the authors themselves describe it, not a study) published online in July by the journal Zoonoses Public Health (and to be included in an upcoming print edition).

“The information in this review,” explain Rick Gerhold and David Jessup, the paper’s authors, “highlights the serious public health diseases associated with free-roaming cats and underscores the need for increased public health attention directed towards free-roaming cats.” [2]

I’ll save my critique of “Zoonotic Diseases Associated with Free-Roaming Cats” for next time. And let’s set aside for the moment those alleged wildlife impacts, and ABC’s dubious estimate of the number of outdoor cats in this country. What about ABC’s apparent concern for those “serious public health diseases”? Read more

More Kitty Cams and PR Scams

“There’s hostility to lying, and there should be.” —Bob Woodward

With just six minutes and 34 seconds to play, I don’t imagine readers got very far with their bingo cards during Friday night’s episode of 20/20 (“The Camera Never Lies: Kitty Cam Killers”). (My apologies for not including Killing Spree—I should have seen that one coming.) It was clear, though, from the footage of George Fenwick’s interview, that things could have played out very differently—the president of the American Bird Conservancy had his talking points down. Read more

HAHF-Truths, HAHF-Measures, Full Prices (Part 1)

Complaining of the impacts of free-roaming cats on wildlife and the environment, along with a range of public health threats, dozens of veterinarians in Hillsborough County, Florida, have banded together to fight TNR. Evidence suggests, however, that their real concern has nothing to do with the community, native wildlife, or, indeed, with cats. What the Hillsborough Animal Health Foundation is most interested in protecting, it seems, is the business interests of its members.

This was Take Your Cat to the Vet Week, a time “to raise awareness of the fact that cats need an annual veterinarian examination just as much as dogs,” according to Feline Pine, the litter manufacturer responsible for the occasion’s creation. In Hillsborough County, Florida, however, it was a time for many in the veterinary community to reiterate their opposition to TNR.

“We love cats!” Don Thompson assured me earlier this week via e-mail. “Any person who argues that vets don’t love animals is being foolish.” But, just like David Aycock, chief animal control officer for Pompano Beach, Thompson’s love has its limits—feral cats need not apply.

Thompson’s not a vet himself, but an attorney. He, along with his veterinarian wife, Katie, operate the Veterinary Center at Fishhawk, and he’s also head of the Hillsborough Animal Health Foundation, whose members are, according to the HAHF website, “gravely concerned about Trap-Neuter-Return (TNR).” Read more

Less Toxo, More Hype

“As human populations continue to expand farther out into natural areas,” warns The Wildlife Society in a February 17 blog post, “domesticated animals will continue to be at risk for exposure to diseases carried by their wild relatives.” Considering the domesticated animals in question are cats, the organization’s apparent concern is almost touching. Almost.

Actually, TWS is, not surprisingly, much more concerned about cats transferring disease from “their wild relatives” to humans. Results of a recent study, published a month ago in the online, open-access journal PLoS ONE, suggests TWS blogger “policyintern,” illustrate “the importance of keeping domesticated cats close to home to prevent disease transmission among cats and to humans.”

Among those diseases is one that’s been getting lots of attention recently in the mainstream media: toxoplasmosis.

And just how likely is it that your cat will give you toxoplasmosis?

Not very—at least according to this latest research. (The study also looked at bartonellosis and Feline Immunodeficiency Virus, but I’ll save those for another post.) To begin with, “feral, free ranging domestic cats were targeted in this study” [1, emphasis mine], not pets. And, despite what TWS and others would have us believe, contact with these cats is relatively uncommon.

Then there’s the unexpectedly low infection rate reported by the authors of the study: just 1 percent for domestic cats, as compared to 75 percent for pumas and 43 percent for bobcats. Based on previous studies, one would expect seroprevalence rates of 62–80 percent for feral cats. [2] (Even “owned” cats* were found to have rates of 34–36 percent. Interestingly, the highest rate of seroprevalence was found among cats living on farms: 41.9–100 percent.)

Seroprevalence, with bars representing 95 percent confidence intervals, of T. gondii IgG,** for domestic cats, bobcats, and pumas at all study locations (FR = Front Range, CO; WS = Western Slope, CO; OC = Orange County, CA; SDRC = San Diego/Riverside Counties, CA; VC = Ventura County, CA). Sample sizes are listed above columns.

This should be big news for TWS.

At the very least, the low infection rates found in feral cats—combined with the much higher rates in bobcats and pumas—raise serious questions about domestic cats’ role in environmental contamination of T. gondii. Just a year ago, an article published in a special section of The Wildlife Professional called “The Impact of Free Ranging Cats,” was unambiguous: “the science points to [domestic] cats.” [3]

“Based on proximity and sheer numbers, outdoor pet and feral domestic cats may be the most important source of T. gondii oocysts in near-shore marine waters. Mountain lions and bobcats rarely dwell near the ocean or in areas of high human population density, where sea otter infections are more common.” [3]

And, over the past several months, TWS Executive Director/CEO Michael Hutchins has used the TWS blog to hammer the point home, arguing (and twisting the facts along the way), for example, that a 2011 NIH study provided “further evidence that feral cats are a menace to our native wildlife and should be controlled.

In July, it was the grave threat to humans:

T. gondii infection has recently been correlated with the incidence of Parkinson’s disease, autism, and schizophrenia in humans, and it has long been known to cause fetal deformities and spontaneous abortions in pregnant women… Let’s hope that public health officials, including the CDC, begin to take note of these growing concerns about cats and their implications for human health.”

In fact, this latest study suggests that such concerns may not be growing at all, at least where toxoplasmosis is concerned. On the other hand, the simpler, scarier story—cats as a menace to both wildlife and humans—is certainly an easier sell for TWS.

* I assume this refers to indoor/outdoor cats, but have not chased down the individual studies to confirm this.

** Refers to immunoglobulin, or antibody, G (IgG), “which is detectable for ≥52 weeks after infection,” as compared to immunoglobulin M (IgM), “which indicates recent infections and is usually detectable ≤16 weeks after initial exposure.” [1]

Literature Cited
1. Bevins, S.N., et al., “Three Pathogens in Sympatric Populations of Pumas, Bobcats, and Domestic Cats: Implications for Infectious Disease Transmission.” PLoS ONE. 2012. 7(2): p. e31403. http://dx.doi.org/10.1371%2Fjournal.pone.0031403

2. Dubey, J.P. and Jones, J.L., “Toxoplasma gondii infection in humans and animals in the United States.” International Journal for Parasitology. 2008. 38(11): p. 1257–1278. http://www.sciencedirect.com/science/article/B6T7F-4S85DPK-1/2/2a1f9e590e7c7ec35d1072e06b2fa99d

3. Jessup, D.A. and Miller, M.A., “The Trickle-Down Effect.” The Wildlife Professional. 2011. 5(1): p. 62–64.