It was funny when I brought my puppy home and introduced her to my cats. I have 2 cats. My calico was very curious and went right up the puppy and they became long lost friends. My other cat would run everytime he saw the puppy so naturally the puppy would chase the him. That eventually stopped and he stopped hiding all the time. They all get along fine now. So just be patient your cat will come around. I also keep my cats food on the counter so the puppy can't get into it.