I'm not sure. I think I lean towards cats but I really love puppies. The thing that is off putting of dogs for me is when I watch my friend's dogs eat their poop. Then again my cat licks his butt all the time, so same thing. I hope to get a dog in the future so my opinion may change. Also, cats can use a litter box and be let out from time to time, but, if you're late from work and don't show up on time you may be greeted by a very mad dog and a mess.