I'm more of a dog person, but have both (you should have added a choice for 'both').....we have 3 dogs and they are just the best. I've had many, many, cats over the years, but we lost 2 over the past year (one was the coolest cat ever and the first real heartbreak over a pet loss), but now we're down to 2. Anyway, if I have to choose, it's dogs all the way.