How does your dog get along with other pets in your home?

Our roommate has a cat who is about 12 or 13 years old. When we got Brogan she was not too happy about it. She hid out for a few days and then slowly started coming back out of the bedroom. Now she comes out a lot and Brogan tries to play with her but she just slaps at him and hisses at him. (She is declawed, which I feel is NOT the thing to do for a cat but she was like that when my cousin got her). Brogan will put his little butt up in the air and bark at her just wanting to play but she won't have it. Sometimes she does get playful and will chase him up the hallway slapping at his butt. It's hilarious! But she just really tolerates him. I wish they would lay together and cuddle but I do not ever see that happening.