Hypervitaminosis A from excessive liver feeding is a serious and preventable welfare problem in cats. Understanding safe liver amounts protects cats from this damaging nutritional imbalance.
Hypervitaminosis A causes chronic and progressive suffering that is entirely owner-caused and preventable. The condition progresses silently over months with early signs of neck stiffness dismissed as normal aging, until the cat can no longer groom, adopt comfortable resting positions, or consume food comfortably. The painful bony growths along the cervical spine cause constant discomfort that worsens with every movement. The irony that this condition is caused by feeding what is perceived as a natural, healthy food makes owner education particularly important. No welfare harm from proper nutrition management is needed given the clear dose-response relationship.