Hypervitaminosis A is a serious welfare-compromising condition caused by excessive vitamin A intake in cats, typically from fish liver-heavy diets. Understanding prevention protects cat welfare.
Hypervitaminosis A causes severe, progressive, and largely irreversible welfare harm. Affected cats develop painful bony proliferations that compress nerves, restrict neck movement, and ultimately limit their ability to groom, eat normally, and move without pain. The insidious onset over months means owners often attribute early signs to aging or arthritis, delaying diagnosis until significant permanent damage has occurred. The welfare tragedy is that this entirely preventable condition results from well-intentioned but misguided feeding of raw fish-based diets marketed as natural and healthy. Commercially balanced complete cat foods prevent vitamin A toxicity through formulated safe inclusion levels.