Thanks for your question. Generally, puppy means six weeks old dog. You have to careful about your puppy. You have to give your personal attention to your puppy for first few weeks. But the reaction of cats is unpredictable. I think cats will settle down and get used to the puppy. You don’t lose your relation with cats. You have to spend a lot of times with your cats and puppy. You have to give food to your cats and puppy together. You can take them for a walk in the evening.Thus they can be familiar with each other.Hope you find your answer.