It is abnormal for a cat to have a fever of 40 degrees after vaccination. Generally, cats may experience adverse vaccine reactions after being vaccinated, such as listlessness, loss of appetite, vomiting, etc. However, if they have fever symptoms, they need to consult a doctor for treatment in time. Some cats may have allergic reactions to vaccines, which may cause their body temperature to rise. Therefore, after vaccinating a cat, it is generally recommended to observe it in the pet hospital for half an hour. If there are no abnormalities, you can leave.

Precautions for cats after vaccination:

1. Pay attention to feeding the cat after vaccination. Generally, cats will have some loss of appetite after vaccination, but do not eat during this period. If you force a cat to eat, you should give the cat time to slowly adjust and recover, and do not feed too greasy food at this time.

2. After cats are vaccinated, they should pay attention to preventing illness, keep warm, and supplement nutrition appropriately.

3. Be careful not to take a bath after the cat is vaccinated. It takes about 7 days after the vaccine is injected to produce a certain amount of antibodies. During this period, the cat’s resistance is weak and it is easy to catch cold and get sick while bathing.