Repeat this exercise as frequently as you can, until both pets are comfortable and responding favorably. Don't try to rush the introduction or force them to become friends. You will know and feel when the time is right to begin short supervised sessions with both pets unrestrained. Cats When selecting a new cat, try to find one that has lived with cats before. It is best to introduce a cat that is different in age and sex to the resident cat.
Fighting usually occurs between cats of the same sex and age, especially between toms.
While cats of the opposite sex get along best, they should be spayed and neutered. Generally, your cat will best accept a kitten. However, if your cat is a senior citizen, spare it the nuisance of a rambunctious youngster and get it a mellow, adult companion. Try to match personalities. If your cat is a spitfire, then she will probably love another active cat or kitten, not a couch potato.