Introducing your cats to your dog Introducing your cats to your dog I have to begin by saying that the easiest way to have a multi species household is if you start out with babies. A kitten and a puppy who at least for now are close in size and can grow up together in harmony. The second best way to do things would be to bring a kitten into a pre-established dog household.
Dogs are much more loyal and accepting of such changes.
You will however encounter the biggest problem when you have a pre-established cat household and suddenly try to throw in a dog. See cats have certain ideas on the way things should be run. They set up their own hierarchy and don't like anyone trying to come in and rearrange things. When they have spent years or months as the spoiled and pampered babies, they will never easily understand your sudden need for a canine companion. Your cats will look at a dog and they just can't rationalize any reason whatsoever for the existence thereof.