Yellow: with caution
Liver is a nutritious food for cats, but one where the quantity determines benefit or harm. It contains a lot of vitamin A. Cats need this vitamin, but are also more sensitive to too much than dogs.
Why the traffic light is yellow
Cats cannot produce vitamin A from plant beta-carotene because, according to the Merck Veterinary Manual, they lack the necessary intestinal enzyme. You need it ready made from animal sources, and liver is one of them. Therein lies the problem: According to VCA Animal Hospitals, vitamin A poisoning in cats usually occurs as a result of long-term oversupply, most often through raw liver, cod liver oil or vitamin A preparations over weeks to months.
The consequences develop gradually: shaggy fur, weakness, weight loss, constipation and, above all, additional bone growth, especially in the cervical spine, chest and joints. The cat then moves stiffly and with pain. The Merck Veterinary Manual describes such bone growths on the first three cervical vertebrae in kittens that received a lot of liver. The sources do not mention a safe maximum amount. They recommend a balanced ready-made food or a recipe calculated by a veterinarian.
What you should pay attention to
- Only occasionally: Liver is a rare extra, not a daily side dish.
- Cooked instead of raw: Raw offal also brings with it the germ risk of feeding raw meat.
- Do not double: Do not add cod liver oil or vitamin A preparation without a veterinarian's instructions.
- Liver sausage is not liver: It is seasoned, salted and often made with onions.
What to do if your cat has eaten liver?
A piece of cooked liver stolen once is not an emergency, at most it results in soft stool. If your cat has been receiving liver or cod liver oil regularly for a long time and seems stiff, no longer jumps or doesn't like being touched by the neck, have it examined. The bone formations can be seen on x-rays.
If poisoning is suspected, go to the vet immediately or to the veterinary emergency service.
Treats and extras are part of the daily ration, so subtract them from the regular food. The cat food calculator.
shows you how much your cat needs in totalFrequently asked questions
How often can a cat eat liver? The sources do not mention a fixed amount. They advise not to feed liver on a long-term basis because poisoning occurs due to oversupply over weeks to months.
Read more
Sources, accessed on 05.11.2026: VCA Animal Hospitals, Vitamin A Poisoning in Cats (Renee Schmid, DVM, für Pet Poison Helpline); Merck Veterinary Manual, Nutritional Requirements of Small Animals
