I've had, and currently have, both cats and dogs. The two cats we currently have, brothers, are the most mellow cats I've ever seen. They are also like a Colombian Death Squad to unwanted rodents around here. Neighborhood started experiencing a rat problem a few years back. Six months after we got the boys, our neighbors were thanking us. My Husky/Carolina Dog mix took a while to realize as a puppy that the cats weren't toys, or large squirrels that got into the house. They're all pretty cool with each other now. Helped that the cats were so damn tolerant of her. She'd grab a foot or tail in her mouth, and the cat would just look at her with a "Do you mind?!?" Face. Now, she is the neighborhood squirrel patrol. She knows if she isn't out there every day, the damn squirrels will set up camp on the sidewalks, begging for nuts..... Probably leave tiny cigarette butts all over.