Thanks for the comments!

I really want to get an idea of what he is, so I'm making a list of his traits.

-Before he got arthritis, he was obsessed with his ball. Ball after ball after ball. Never much cared for the frisbee though.
-He has webbed feet, but he's afraid of water.
-He is 18 inches at the shoulder.
-He is a black and white ball of fluff.
-He's always been overweight.
-He doesn't like other dogs or small children and he likes to chase cats (except mine, he's afraid of her lol).
-He doesn't bark unless something is bothering him (Timber )
-He has never jumped on furniture.
-He likes to sleep in the shade.
-His tail sticks straight out behind him, and curls at the end. It is whip-like but covered with fluff lol.
-He has very short legs.
-He is a picky eater when it comes to dog treats, but loves people food.
-He doesn't eat alot, and I've only seen him wolf down food when Timber is around.
-He isn't a good guard or watch dog, but I think that if his family was in danger he would protect till the end.
-He loves to go camping, he just loves the outdoors.