I don't like little rat like dogs, I like big dogs. Labs, Goldens, Shepards, Great Danes (I'd love to own a Great Dane one day, they look so cool, and they're HUGE!), etc. If I were to ever get a dog I'd have to be living in a house with a big yard so the dog could run around all it wants to.
I wouldn't mind a cocker spaniel though, that's the smallest dog I could deal with. We had to cockers when I was a kid. A very dominant, very big for a cocker, male, and a smaller, shyer female. They got along with myself and my sister great and they were like best friends to each other. And I love their fluffy ears. Rub a dogs ears and it'll be your friend for life, or at least until the next person does.
I don't like cats. The ones all of my relatives have aren't very friendly, they run away when we come in. Dogs always come up to us and wag their tails and bark and stuff. They seem to be much friendlier than cats towards people they don't know.