My two cats have lived with dogs all of their lives. All but one are at the Rainbow Bridge and I am happy to report they currently peacefully co-exist with our current doggie resident, Bella. Trevor goes from ignoring Bella to actively engaging in wrestling activities, etc. with her. Sometimes he is the chaser and sometimes he is the chasee! Andy never starts anything with Bella which surprises me because he always starts the wrestling matches between himself and Trev. If Bella gets on his nerves he simply goes to higher ground where she can't reach him. Usually things are very peaceful around here and I think it's because as kittens Trevor and Andy grew up with dogs and Bella came to live here at 8 weeks of age and simply accepted the cats as part of her new life. I think Bella would welcome another dog, but I have my doubts as to whether Trevor and Andy would welcome another cat. They are a pretty tight duo!