The reasons why cats’ ears are hot:

1. When a cat has a cold or fever, the cat’s ears will also become hot.

2. When a cat is heated or exercises excessively, the blood flow in the cat's body will be faster, resulting in fever in the ears.

3. Cats may also have hot ears after inflammation in their body, such as pneumonia, viral infection, etc.

Solutions to cats with hot ears:

1. If it is caused by a cold or fever, you can give the cat cold medicine or antipyretic medicine to solve the problem.

2. If it is caused after exercise, you can provide the cat with drinking water to cool down.

3. If it is caused by inflammation, you need to take the cat to the pet hospital in time to eliminate the inflammation in the cat’s body.