You have seen this study before. Maybe you did not know its name, but you have seen it. Almost every raw feeding brand loves to bring it up. A 1940s experiment where cats fed cooked food fell apart over a few generations, while cats fed raw stayed healthy and strong.
The takeaway is always the same. Cooking is the villain. Raw is the hero.
The story is real. The conclusion most people draw from it is wrong. And once you understand what actually happened to those cats, you will understand your own cat's nutrition better than most of the pages quoting the study.
What Pottenger actually did
Dr Francis Pottenger Jr ran the experiment from 1932 to 1942. Over 900 cats. He split them into groups and fed each group differently. Some got raw meat and raw milk. Others got cooked meat and pasteurised milk.
The results looked dramatic. The cats on raw food stayed strong, bred easily, and raised healthy kittens. The cats on cooked food developed heart problems, bone deformities, poor eyesight, and reproductive failure. Each generation came out worse than the one before.
Pottenger could see the damage clearly. What he could not do was explain it. He guessed there was some fragile factor in raw food that heat destroyed. He was close. He simply did not have the tool to name it.
The nutrient nobody had discovered yet
Here is the part the raw feeding pages skip.
The thing that broke down in the cooked food was taurine.
Taurine is an amino acid. Cats cannot make enough of it on their own, so they have to eat it. It sits in animal tissue, and it is fragile. Heat degrades it. Cook the meat long enough and much of the taurine goes with the heat.
In the 1930s, nobody knew this. Taurine was not confirmed as essential for cats until 1975, more than thirty years after Pottenger finished his work. He was watching taurine deficiency unfold in front of him with no name for what he was seeing.
Look at what the cooked group actually suffered. Failing heart muscle. Degenerating retinas and fading sight. Stillbirths, low birth weight, kittens that did not survive. Every one of those is a classic sign of taurine deficiency. Not cooking. Deficiency.
Real scientists went back and checked
This is not one lone opinion. Researchers have gone back through Pottenger's work with modern knowledge and reached the same verdict.
A 2014 review in The FASEB Journal, titled Pottenger's cats revisited, matched his findings against what taurine deficiency is known to do to cats. Symptom by symptom, they lined up. The authors concluded that Taurine deficiency is a strong explanation for the symptoms observed by Pottenger
. His own guess about a fragile heat-sensitive factor turned out to be taurine all along.
Feline nutrition specialists have been just as blunt about the study's limits. The cats were donated strays with unknown histories. There were no proper control groups. The food shifted in quality and freshness across the ten years. By modern standards the design was loose.
None of this makes Pottenger a fraud. He was a careful observer working before the science caught up to what he was seeing. But using his cats as proof that cooking itself is poison does not survive contact with the facts. Add taurine back into cooked food and the disaster does not happen. That is the entire reason commercial cooked cat food can keep a cat alive at all.
So is raw actually better, or not?
Yes. Just not for the reason the study is usually sold on.
Raw feeding does not win because heat is evil. It wins because of what a cat is.
A cat is an obligate carnivore. Not a mostly-meat animal. A strict one. Its body is built to run on animal protein and animal fat, and along the way it lost the ability to do several things other animals manage easily.
Here is what that means at the food bowl.
Taurine arrives ready-made and plentiful in raw animal tissue, especially heart and muscle meat, and it has not been cooked away before your cat ever sees it.
Water comes built into raw food. Cats descend from desert animals with a weak thirst drive. They are meant to draw most of their water from prey, not a bowl. A dry diet leaves many cats quietly under-hydrated for life.
Carbohydrates barely belong in a feline diet at all. A cat has almost no biological need for them. Raw feeding keeps the carbohydrate load low, the way the animal is designed for.
And the nutrients in raw tissue arrive in a form the cat's body reads easily. Protein, fat, vitamins, and minerals in the shape evolution tuned the cat to absorb.
None of that needs a 1940s experiment to be true. It is written into the animal.
What we feed, and why
This is not theory for us. Bangkok Cats is a world championship cattery, and the cats behind those titles are fed on exactly this logic. Pau, who trained as an animal biologist, builds the nutrition around what a cat's body genuinely requires. Sun, who runs the daily feeding and breeding, watches it show up in coat, energy, and condition year after year.
The science comes first. The results follow. That order is the whole point.
Remember the cats accurately
Pottenger's cats are worth remembering. Just remember them for what they were.
They did not prove that cooking is poison. They proved that a cat robbed of one essential nutrient falls apart, generation after generation. The lesson is not raw against cooked. The lesson is that a cat's biology is specific, unforgiving, and easy to get wrong the moment you feed it like a small dog.
Feed the animal it actually is. That is the whole idea behind The Cat's Standard, and it is why we build raw the way we do.
