The vast majority of aggressive cats develop attack behaviors due to some degree of past pain. For cats with long-term aggressive behavior, corrective treatment is necessary. Undoubtedly, their aggressive behavior can be seen as hostility toward another cat, dog, or even humans. Such cats are usually highly nervous.

　　If your cat shows aggressive behavior, consider the following tips:

　　1. Find a companion for your cat

　　If it is a lonely old cat, try adding a kitten as a companion. Because one old and one young cat are easier to accept each other, but be sure to bring the kitten home by a person the old cat does not know. This helps prevent the old cat from associating you with the kitten and becoming jealous.

　　2. Create impressions for the cat

　　If the old cat is hostile to the kitten, try referring to the kitten as “the old cat’s kitten.” This can create a positive connection between them. Also, when talking to the kitten, speak to the old cat at the same time, encouraging the old cat to engage and have normal contact with the kitten, thus building their relationship.

　　3. Treat the cat as the owner

　　If the cat is particularly nervous around someone, try referring to that person as the cat’s person. For example, “This is Lily’s cat, Lily.” This will link them together and dispel the cat’s tension and anxiety about that person, though it requires repeated practice.

　　4. Cats are easily influenced by their owner’s emotions

　　As an owner, engage in stress-reducing exercises and activities to relax both yourself and your cat.

　　5. Rebuild the cat’s behavior

　　Some owners visit veterinary clinics to use sedatives to control the cat’s mood, but simply trying sedatives only treats symptoms, not causes. Effective treatment requires rebuilding the cat’s behavior combined with sedatives to help reduce triggers of its aggressive behavior.

　　6. Play music for the cat

　　Music has a relaxing effect on cats and can reduce their aggression. Therefore, you can play your music accompanied by soft background music, which also soothes the cat.

　　7. Trim the cat’s nails

　　When cats feel stressed, they naturally use their claws to attack enemies, so regularly trim your cat’s nails. It’s best to have another person hold the cat to distract it during trimming.

　　In summary, most aggressive behavior in cats is triggered by emotional stimulation, so owners should avoid anything that could affect the cat’s emotions. (Source：PetsZone)