Our cat was ten when we got our cocker and although there was alot of growling and hissing and a odd swip they seemed to tolirate each other. They were never excellent friends but would be in the same room together. They only thing your have to watch is pup doesnt get to playful with kitty. Although i didnt have this problem as my cat gave one good swip and murphy knew his boundry. I did find keeping the food and litter out of the dogs way a challege.But it all seemed to work out. It just takes slow patiance and time. Your probably find your cat will learn to accept your pup but they wont be best buddies.