Causes of cat nose fever:

1. Exercise. When a cat exercises strenuously and its overall body temperature rises, its nose will become hot.

2. Hot. When a cat is in a hot environment, the cat will dissipate heat itself, so the cat's nose will become hot during the process of dissipating heat.

3. Cold and fever. When a cat has a fever, the cat's overall body temperature rises, and the cat's nose will be in a heated state.

4. Infectious diseases. When cats suffer from severe infectious diseases, such as feline distemper, cat-borne abdominal disease, and rabies, the immune system will be destroyed, causing the body temperature to rise rapidly.

5. Heatstroke. Some cats are sensitive to changes in outside temperature and are prone to heatstroke. Cats after heat stroke are likely to have symptoms such as fever in the nose and pads.