I know people that have cats and all kinds of critters. I know some one who brought a puppy into their home that has adualt cats. It takes time for the cats to get used to a new member in the house. If the cats were not terrorized by any dogs than the cats will get used to the puppy. As the owner of the cats you need to train your puppy not to chase them. In order to do this you need to introduce the puppy to the cats gradually. Do not leave the puppy alone to much with the cats at first. let the cats go to the puppy while you hold him. Puppies are a big responsability and should be looked after properly. If you treat the puppy and the cats equal they will start to get used to eachother. This takes about 6 weeks to train the puppy to be good with the cats. Remember that the cats can run faster than the puppy because the pup is still a little clumsy and has a harder time running. If the cats want nothing to do with the puppy, They will most times ignore that there is a small dog there. Make sure that the puppy and cats sleep seperate unless the cats go to him and sleep beside him on their own. You and your pets will be alright and happy as long as you show your pets that you love them.