Whats the breed for me?

I want a small to medium sized dog but its needs to be a good swimmer, trailer, and avid hunter. I would prefer short hair, and a verity of hair colors to choice from. A dog that doesn't have many health problems is preferred but some are ok as long as they do not usually cause death (tumor, and sesures). I do not care if it is a pure breed or mix-breed as long as it fits my criteria.