Liver

Cats are especially sensitive to vitamin A, so regular or large liver servings cause vitamin A to accumulate and lead to joint and bone problems.

Joint stiffness, reluctance to move, neck or limb pain, a poor coat; severe cases lose appetite and weight.

Contact a vet immediately if vitamin A toxicity is suspected, and seek prompt care for stiffness, pain or reluctance to move.

For cats, keep liver to a nail-sized piece now and then, counted within the treat allowance; it cannot replace cat food and long-term feeding is riskier than in dogs.

Liver is extremely rich in vitamin A, so regular or large servings let it accumulate and cause vitamin A toxicity with joint stiffness and bone changes; liver is also fairly fatty and calorie dense.

Joint stiffness, reluctance to walk or jump, neck and limb pain, bony and joint changes; severe cases lose appetite and weight.

If you suspect vitamin A toxicity from long-term liver feeding, contact a vet immediately for assessment, and seek prompt care for stiffness or obvious pain.

At most one nail-sized piece per pet about once a week, counted within the daily treat allowance; liver is not a supplement and cannot replace a complete diet.