Reason #488 To Keep Your Cats Indoors: They Hunt Whether They’re Hungry Or Not

Cats who have regular outdoor access and hunt wildlife still get 96 percent of their nutrition from pet food, a new study found, suggesting their predatory behavior is driven by instinct, not hunger.

A new study from the UK debunks the claim that cats need access to the outdoors to supplement their diets with wild kills.

Cats who spend a significant amount of time outdoors and regularly kill local wildlife still get 96 percent of their nutrition from meals provided by their humans, according to research by a team at the University of Exeter.

The scientists connected with cat owners through ads on social media, TV and in print publications, specifically seeking out “cat owners living throughout southwest England whose cats regularly captured wild animals and brought them back to the house,” the study’s authors said.

They gave the owners a questionnaire to collect some basic information on the kitties — age, sex, breed, whether they had unrestricted access to the outdoors, and how much time they spend outside — then split the 90 participating cats into six groups.

Cat hunting
A domestic tabby cat stalking in the grass. Credit: Wikimedia Commons

To set a baseline, the scientists trimmed small sections of whisker from each of the cats, then trimmed a second sample at the end of the study.

By comparing stable isotope ratios in the whisker samples, they were able to determine what the cats were eating. Despite regular access to the outdoors and successful hunts, pet food accounted for the vast majority of their diets.

As a result, the researchers concluded, outdoor cats hunt because they’re driven by predatory instinct, not hunger.

“When food from owners is available, our study shows that cats rely almost entirely on this for nutrition,” said Martina Cecchetti, the study’s lead author.

“Some owners may worry about restricting hunting because cats need nutrition from wild prey, but in fact, it seems even prolific hunters don’t actually eat much of the prey they catch,” Cecchetti said. “As predators, some cats may hunt instinctively even if they are not hungry – so-called ‘surplus killing’ – to capture and store prey to eat later.”

A second component of the study was designed to find the best mitigation strategy to change the behavior of outdoor cats.

Each group was given a different strategy: In one group, cats were outfitted with bells on their collars, while another group wore reflective break-away collars and cats from a third group were fitted with BirdBeSafe collars. The other groups were told to make habit changes inside the home. For example, one set of cats was fed a higher-protein diet without grain filler, another group was fed with puzzle feeders, and the last group was given extra interactive play time.

While high-protein diets and play time helped cut down on hunting, the BirdBeSafe collars had the biggest impact on hunting success. The collars come in bright colors designed to stand out to avian eyes, taking away stealth and the element of surprise from cats.

The study was sponsored by Songbird Survival, a British non-profit that funds bird conservation research and looks for ways to mitigate the dwindling numbers of many avian species.

Susan Morgan, Songbird Survival’s executive director, said her group hopes cat owners will do their part to help: “Pet owners can help us reverse the shocking decline in songbirds via three simple, ‘win-win’ steps: fit collars with a Birdsbesafe cover; feed cats a premium meaty diet; play with cats for five to ten minutes a day to ‘scratch that itch’ to hunt.”

Of course there’s an obvious solution the study didn’t include: Keeping cats indoors. While keeping cats indoors is common in the US, cat ownership culture in the UK is different — another subject for another post.

Read the full text of the study here. Header image credit Pexels. Body images credit BeSafeCollar.

Previously:

1024px-Florida_panther_kittens
A pair of young mountain lions in Florida. Credit: Wikimedia Commons/WOConservation

The Most Important Cat Study Ever Has Been Completed, And The Results Are In

For the first time ever, a US city has conducted a true cat census using scientifically proven methods, including doing it the hard way — by counting. The project’s authors hope other cities follow their lead.

The last decade has seen something of a renaissance in cat-related research, with insightful studies about feline behavior coming from researchers in the US and Japan.

On the other hand there’s been a glut of research into feline predatory impact and public policy, and the majority of those studies have been deeply flawed. They’re based on suspect data and tainted by the interests of people who are more interested in blaming cats for killing birds than they are in learning about the real impact of domestic felines on local wildlife.

Those studies have all taken extreme shortcuts — using data that was collected for entirely different studies, for example, or handing out questionnaires that at best lead to highly subjective and speculative “data” on how cats affect the environment.

Several widely-cited studies that put the blame on cats for the extirpation of bird species have relied on wild guesses about the cat population in the US, estimating there are between 20 million and 120 million free-roaming domestic cats in the country. If you’re wondering how scientists can offer meaningful conclusions about the impact of cats when even they admit they could be off by 100 million, you’re not alone.

No one had ever actually counted the number of cats in a location, much less come close to a real figure — until now.

When leaders in Washington, D.C., set out to tackle the feral cat problem in their city, they knew they couldn’t effectively deal with the problem unless they knew its scope. They turned to the University of Maryland for help, which led to the D.C. Cat Count, a three-year undertaking to get an accurate census with the help of interested groups like the Humane Society and the Smithsonian.

DC Cat Count
An image from one of 1,530 motion-activated cameras deployed for the D.C. Cat Count. Credit: D.C. Cat Count

The researchers approached each of their local shelters and rescues for data, then assembled a meticulous household survey to get a handle on how many pet cats live in the city, and how many have access to the outdoors.

Finally — and most critically — they used 1,530 motion-activated cameras, which took a combined 6 million photos in parks, alleys, public spaces, streets and outdoor areas of private residences. They also developed methods for filtering out multiple images of individual cats, as well as other wildlife. And to supplement the data, team members patrolled 337 miles of paths and roads in a “transect count” to verify camera-derived data and collect additional information, like changes in the way local cats move through neighborhoods.

DC Cat Count
A cat who looks a lot like the Budster was captured in this 2019 photo from a motion-activated camera with night vision. Credit: DC Cat Count

Now that all the data’s been collected and analyzed, the D.C. Cat Count finally has a figure: There are about 200,000 cats in the city, according to the study.

Of those, 98.5 percent — or some 197,000 kitties — are either pets or are under some form of human care and protection, whether they’re just fed by people or they’re given food, outdoor shelter and TNR.

“Some people may look at our estimate and say, oh, well, you know, you’re not 100% certain that it’s exactly 200,000 cats,” Tyler Flockhart, a population ecologist who worked on the count, told DCist. “But what we can say is that we are very confident that the number of cats is about 200,000 in Washington, D.C.”

The study represents the most complete and accurate census of the local cat population in any US city to date, and the team behind it is sharing its methods so other cities can conduct their own accurate counts. (They’ll also need money: While the D.C. Cat Count relied on help from volunteers and local non-profits it was still a huge project involving a large team of pros, and it cost the city $1.5 million.)

By doing things the hard way — and the right way — D.C. is also the first American city to make truly informed choices on how to manage its feline population. No matter what happens from here, one thing’s certain — the city’s leaders will be guided by accurate data and not creating policy based on ignorance and hysteria painting cats as furry little boogeymen.

DC Cat Count
Not all the photos captured images of cats, and not all the felines were little: In this 2019 night image, a bobcat wanders in front of a trail camera. Credit: DC Cat Count

Here Are Some Cats Singing The Imperial March From Star Wars, Plus Some Feel-Good Cat-Human Reunions

Stories from the past week in kitty-related news.

Since we featured some sad news in our last post — though tempered with some really good news from a Portland cat cafe — we’ll wrap up the week with some humor, absurdities and science, all cat-related of course:

  • Do you have two cats? If so, you can help researchers from UC Davis and the University of British Columbia, who are studying the ways cats interact with each other in human homes. All you have to do is watch a few cat videos online, then answer a handful of questions about the behavior of the cats in those clips, as well as the behavior of your own kitties. With enough data from participants, the research teams hope they can better understand the often-inscrutable interactions, squabbles, truces and social hierarchies that define relationships between domestic felines sharing the same home territory. “Ultimately, we hope this research can help identify gaps in owners’ knowledge of cat behavior,” U of BC’s Sherry Khoddami told Gizmodo. “The welfare of cats in the home is an under-researched area.”

  • Yes, cats do have a long and distinguished history of “messing shit up,” and they simply don’t care. Maybe that’s why cats singing the Imperial March from Star Wars — okay, cats sampled and pitch-shifted to the Imperial March’s melody — feels appropriate. Our fluffballs are inevitable.

This week brought us stories of two cats who were reunited with their humans after more than a decade apart, both in the UK.

  • Tom, a tuxedo in Cardiff, Wales, went missing in 2009. He spent most of the past decade-plus living with another cat in the safety of a cemetery with the help of a nearby family, who kept them well-fed. It wasn’t until recently that someone tipped off a local rescue to the presence of the two “strays,” and finally Tom’s microchip was scanned. On Friday, Tom’s human, Donna, was overcome with emotion when she reunited with the little guy at Anna’s Rescue Centre of Cardiff, fighting back tears as she stooped down to stroke his fur. Donna also adopted Tom’s longtime companion from the cemetery. (Click the link for video, which we were not able to embed.)
  • Meanwhile in Aberdeen, Neil and Lucy Henderson were reunited with their tabby, Forbes, who had gone missing in 2011. Neil Henderson was so shocked, he had to pull over and stop his car when his wife told him Forbes had been located by the SCPA. “I was completely unprepared for what I was about to be told and hearing that Forbes had been found left me completely astounded,” he told the BBC. Forbes was picked up by an animal control officer who realized he was very friendly and had a microchip. The Hendersons “have no way of knowing where Forbes had been all this time or what adventures he might have been on,” but they’re ecstatic that he’s back home.

Forbes the cat's missing poster
The original missing poster created by the Hendersons when Forbes disappeared in 2011.

Unlike Other Animals, Cats Always Take The Free Meal

When given a choice between an easy meal and food in a puzzle feeder, cats opt for the low-effort yums.

When presented with a simple tray of food and a food puzzle that requires a little work to get at the yums inside, every animal ever tested has opted for the latter.

Except cats.

Rhesus monkeys, rats, chickens, bears, starlings, gerbils, chimpanzees and a wide range of other animals are drawn to food puzzles, perhaps because the food tastes sweeter to them if they’ve had to work for it, or maybe because it’s just something amusing to do.

“There is an entire body of research that shows that most species including birds, rodents, wolves, primates – even giraffes – prefer to work for their food,” said Mikel Delgado, a cat behaviorist and lead author of the newest study on the phenomenon known as contrafreeloading. “What’s surprising is out of all these species cats seem to be the only ones that showed no strong tendency to contrafreeload.”

Puzzle feeder
A puzzle feeder used in the study. Credit: UC Davis

Delgado, a research affiliate at UC Davis’ School of Veterinary Medicine, used a clear puzzle feeder so the cats in her study could see the treats inside. A few feline study participants gave it a shot, but only after grabbing themselves some easy grub first. Other cats just ignored the food puzzle and munched exclusively from the tray.

While this is at least the second study to specifically test whether cats “freeload” their meals, the why of this particular feline behavior remains a mystery. Delgado cautioned against the obvious conclusion — that cats are just lazy — and pointed out that several cats in the study were active and expending energy, just not with the puzzle feeder.

One possible explanation: As hunters and obligate carnivores, cats simply may not enjoy games that simulate foraging the way omnivores and herbivores do.

The study was published on July 26 in the academic journal Animal Cognition. Read it here.

Screenshot 2021-08-13 at 08-31-22 MikelDelgadoProfile jpg (WEBP Image, 800 × 800 pixels)
Mikel Delgado with a kitty. Credit: Community Cats Podcast

How Much Can AI Teach You About Your Cat?

A new AI algorithm promises to help you gauge your cat’s mood — and determine if she’s in pain — by analyzing facial expressions.

In the photograph, Buddy is sitting on the coffee table in the classic feline upright pose, tail resting to one side with a looping tip, looking directly at me.

The corners of his mouth curve up in what looks like a smile, his eyes are wide and attentive, and his whiskers are relaxed.

He looks to me like a happy cat.

Tably agrees: “Current mood of your cat: Happy. We’re 96% sure.”

Screenshot_20210730-092555

Tably is a new app, currently in beta. Like MeowTalk, Tably uses machine learning and an algorithmic AI to determine a cat’s mood.

Unlike MeowTalk, which deals exclusively with feline vocalizations, Tably relies on technology similar to facial recognition software to map your cat’s face. It doesn’t try to reinvent the wheel when it comes to interpreting what facial expressions mean — it compares the cats it analyzes to the Feline Grimace Scale, a veterinary tool developed following years of research and first published as part of a peer-reviewed paper in 2019.

The Feline Grimace Scale analyzes a cat’s eyes, ears, whiskers, muzzle and overall facial expression to determine if the cat is happy, neutral, bothered by something minor, or in genuine pain.

It’s designed as an objective tool to evaluate cats, who are notoriously adept at hiding pain for evolutionary reasons. (A sick or injured cat is a much easier target for predators.)

But the Feline Grimace Scale is for veterinarians, not caretakers. It’s difficult to make any sense of it without training and experience.

That’s where Tably comes in: It makes the Feline Grimace Scale accessible to caretakers, giving us another tool to gauge our cats’ happiness and physical condition. With Tably we don’t have to go through years of veterinary training to glean information from our cats’ expressions, because the software is doing it for us.

Meanwhile, I used MeowTalk early in the morning a few days ago when Buddy kept meowing insistently at me. When Bud wants something he tends to sound whiny, almost unhappy. Most of the time I can tell what he wants, but sometimes he seems frustrated that his slow human isn’t understanding him.

I had put down a fresh bowl of wet food and fresh water minutes earlier. His litter box was clean. He had time to relax on the balcony the previous night in addition to play time with his laser toy.

So what did Buddy want? Just some attention and affection, apparently:

Screenshot_20210801-181618

I’m still not sure why Buddy apparently speaks in dialogue lifted from a cheesy romance novel, but I suppose the important thing is getting an accurate sense of his mood. 🙂

So with these tools now at our disposal, how much can artificial intelligence really tell us about our cats?

As always, there should be a disclaimer here: AI is a misnomer when it comes to machine learning algorithms, which are not actually intelligent.

It’s more accurate to think of these tools as software that learns to analyze a very specific kind of data and output it in a way that’s useful and makes sense to the end users. (In this case the end users are us cat servants.)

Like all machine learning algorithms, they must be “trained.” If you want your algorithm to read feline faces, you’ve got to feed it images of cats by the tens of thousands, hundreds of thousands or even by the millions. The more cat faces the software sees, the better it gets at recognizing when something looks off.

At this point, it’s difficult to say how much insight these tools provide. Personally I feel they’ve helped me understand my cat better, but I also realize it’s early days and this kind of software improves when more people use it, providing data and feedback. (Think of it like Waze, which works well because 140 million drivers have it enabled when they’re behind the wheel and feeding real-time data to the server.)

I was surprised when, in response to my earlier posts about MeowTalk and similar efforts, most of PITB’s readers didn’t seem to share the same enthusiasm.

And that, I think, is the key here: Managing expectations. When I downloaded Waze for the first time it had just launched and was pretty much useless. Months later, with a healthy user base, it became the best thing to happen to vehicle navigation since the first GPS units replaced those bulky maps we all relied on. Waze doesn’t just give you information — it analyzes real-time traffic data and finds alternate routes, taking you around construction zones, car accident scenes, clogged highways and congested shopping districts. Waze will even route you around unplowed or poorly plowed streets in a snowstorm.

If Tably and MeowTalk seem underwhelming to you, give them time. If enough of us embrace the technology, it will mature and we’ll have powerful new tools that not only help us find problems before they become serious, but also help us better understand our feline overlords — and strengthen the bonds we share with them.

Buddy is bored
Buddy’s bored of all this AI talk and wants a snack.