When it comes to keeping a cat, one of your top considerations should be their comfort and security. Their sense of safety in the cat home, as well as their physical safety, can both be considered. Even if a cat home is too tiny, your cat may try to enter it. Over time, this might create muscle and joint discomfort, making it difficult for your cat to walk. Furthermore, when they get up or walk in, they are more prone to catch or smack their head against the door.