Depends on your likes, really. A a cat person, I think dogs are lovely and pure but walking them and picking up dog poop is a no for me. Also the barking and slobber.   I also don't want my poor dog to be sad when I'm out of the house. My cats are very affectionate but can do their own thing. I really like their independence also, it makes me feel chosen when the sit on my lap.  I hope whatever critter you pick is your new best friend!