My Boxer, Tyson, came to us 4 years ago from the humane society. We had had our solid black cat Mr Jynx for about a year. Also rescued as a kitten. Mr Jynx is the most laid back cat ever. He has been neutered and indoors. All my pets are. They got along fine immediately. I them rescued a black female kitten Little Miss. She hissed for about a day at the dog. Cats got along fine. Since she became pregnant, she has been both fierce and loving to Tyson. But her is a picture of her loving on Tyson just before giving birth.