A swamper is an entirely different rabbit than a cottontail and they're 1 1/2-2 times bigger. They have shorter ears as well. I used to set rabbit gums(traps) and when I caught cottontails I could just run my arm down into the trap and pull them out. A swamper will bite so I couldn't do that with them. Although you can jump both around bottom areas, that's where to head for swamp rabbits. They love water and will readily swim across creeks, etc especially running from dogs. Many times just easing along watery areas I've caught them sitting in their beds right at the edge of the water and popped them in the head with a 22. You can really tell a difference when your dogs jump and run a rabbit you didn't see. A cottontail will generally run away in a circling motion before coming back by you. Many times when your dogs jump a swamper he'll run fast and straight away leading the dogs completely out of hearing before he circles back by you. They're fun to hunt and eat the same as a cottontail. If timber has been cut in a bottom area and there's water and treetops everywhere you have a swamp rabbit paradise.