It is always going to be potentially difficult to introduce a new adult cat to your resident cat. It is important to recognise that even when the introduction process is conducted as carefully as possible, this is not a guarantee that the cats will happily accept one another. Some cats simply do not want to live with other cats and it is important that you are able to recognise and act on this.
Adult cats and kittens can and do certainly wind up getting along, as the kitten and adult cat in the picture above finally did. But it is not usually the easy, quick acceptance that some people think it will be with many adult cats, where you just plop a little kitten down with the adult cat and have everything be fine.
Integrating an adult/senior cat into a new home requires a whole different set of techniques from integrating a kitty (see A Ragdoll Kitten Care Guide for more information on how integrate a kitten). When you adopt an adult cat and bring him into your house, think .