If a cat loses weight after receiving a vaccination, it's likely due to stress, which can cause loss of appetite and weight loss. It's important to prevent this weight loss from continuing, as it can negatively impact a cat's health. In such cases, the owner can supplement the cat's diet with appropriate nutrients. 
Cat care after losing weight following vaccination:
1. Add supplementary food to your cat's diet. Cat owners can add some supplementary food to their cat's daily diet, such as boiled chicken breast, fish, beef, etc., or prepare some fruits and vegetables.
2. Feed your cat nutritional paste as needed. Cat owners can prepare some low-oil and low-salt soup for their cats on a daily basis, or give them some cat nutritional paste.
3. Pay attention to the cat's physical adaptation. After bringing the cat home, cat owners should make sure the cat rests and carefully observe its behavior. You can prepare some clean, warm water for the cat to drink and make the cat's bed warm so that the cat can rest more.
