Normally, a cat's ears are cool to the touch. This is because a cat's ears are generally located at the outermost part of the circulatory system, making them cooler than other parts of the body. A cat's normal body temperature is 38-39.2℃. If you notice that your cat's ears are too cool or too hot, you can take its temperature. A result within this range is normal. If the cat's temperature is lowered, you should keep it warm and take it to a veterinary clinic immediately. If a cat's ears are too hot, it may be due to hot weather or illness, possibly caused by ear mites or a bacterial infection. In this case, you can check its stomach and armpits to determine if the cat has a fever. A fever will cause the whole body to be hot, not just the ears. 
What is the function of a cat's ears?
1. Ears are a barometer of a cat's health. Owners can judge a cat's health by whether its ears are warm or cool.
2. Due to their location, a cat's ears are generally cooler. However, it's not accurate to say that a cat is sick if its ears are very hot. Owners should also consider environmental factors to determine the cause.
3. A cat's ears will change temperature depending on the room temperature. In hot weather, cats need to dissipate heat through their ears, so a slightly higher ear temperature is normal. After exercise or playing, if a cat's body temperature is higher, its ear temperature will also be relatively higher, but it will return to normal after a period of time.
4. Ears play a very important role for cats, and owners should pay attention to protecting and cleaning their cats' ears during daily care.
