Liver (in excess)
Caution
Verdict
Small amounts OK — excess causes vitamin A toxicity.
Toxic principle: vitamin A toxicity (with excess)
Source: ASPCA
Verdict
Liver is rich in vitamin A, and while small amounts are nutritious for cats, excessive liver consumption leads to hypervitaminosis A — vitamin A toxicity. This condition causes painful bone spurs, stiff joints, and weight loss. Cats fed liver as a primary food source can develop this condition over weeks to months. Occasional small portions of liver are fine; daily liver feeding is not.
Symptoms to watch for
- • stiff joints and reluctance to move
- • weight loss
- • bony growths along the spine
- • pain when being touched
- • lethargy
What to do
Feed liver only as an occasional treat — a teaspoon once or twice a week. Never use liver as a primary food. If your cat has been eating liver daily, consult your vet about vitamin A levels.