If they have any of the hunting drive, they could make coon dogs. It all depends on the breeding. For that same price you could find coondogs that are bred strong for hunting. If you have the money to buy a puppy and you want a hunting dog, then I'd do some looking. Does your friend's dog hunt coons, and does the other parent dog hunt coons? These are the questions you have to ask. As for bunnies, I would think the opposite of Recurver67. I think they'd be too fast for rabbits. People use beagles because they are smaller and connot usually outrun a rabbit (not to mention the main reason - they excel at searching out rabbits). You put the legs of a redbone on a beagle, though, and you're likely not to have any chase at all becuase with those legs they'll catch that rabbit instead of run it to the gun. Not only so, but redbones are not so much a running breed, they are a treedog breed, meaning they like to chase something up a tree and bark, not run something to the gun. I could be wrong, but I'd focus on letting a treedog be a treedog, and if you want a rabbit dog, get a running breed.