The death of a cat after eating clotrimazole was caused by drug poisoning, because clotrimazole is toxic to cats. If the cat accidentally eats it and reaches a certain dose, poisoning will occur, which can be serious. It can be life-threatening, so please be careful. Most ointments for treating skin diseases contain clotrimazole. If you use it on cats, be sure to wear an Elizabethan ring to prevent cats from licking it and causing poisoning.