Wild cats can defeat weasels, but pet cats may not be able to. The claws and teeth of wild cats are both lethal. On the other hand, the weasel's canine teeth are too small and the lethality is too weak. Even if the cat stands still, it will take several minutes to kill the cat. However, pet cats are very well protected by humans. They will only feel nervous and scared when facing weasels and will not attack.

Methods to prevent pet cats from getting injured in fights:

1. Cat owners should protect their pet cats and avoid letting cats conflict with other pets.

2. When raising multiple pets at home, it is best to isolate them in the early stages of the mixing and then let them come into contact when they are familiar with each other.

3. Cultivate the cat's temper. When the cat conflicts and is about to fight, stop it in time and train the cat to avoid fighting.

4. If the cat is accidentally injured in a fight without the owner knowing it, take the cat to the pet hospital for examination and treatment in time.