Introduce your puppy to other pets in the house with care. When an older dog meets a puppy, it is advisable to have both pets on leashes. Do not leave them alone together until you are sure they are friends.
If you are introducing your puppy to a cat, consider a wire or mesh gate in a doorway. This allows the two animals to get acquainted while it also gives the cat a way to jump out and find refuge if she needs to get away.
Whether your other pet is a dog or cat, remember to show him/her extra love and affection so that he/she will not be jealous of the puppy. And don’t force your older pet to accept the puppy immediately. Let them become acquainted at their own pace.