Hot cat ears do not mean a fever. The normal body temperature of cats is about 38 degrees to 39.2 degrees, which is relatively high. Moreover, cat ears also have a temperature-regulating function, adjusting the coldness and heat of the ears according to the temperature of the weather. When a cat has a fever, the whole body will generally feel hot. You can touch the cat's belly and armpits to determine whether it has a fever. If only the cat's ears are particularly hot, it may be caused by ear mites or ear canal infection and needs to be checked.