I think the grizzly has then one well in hand. They are not afraid of water, move just as well and fast in the water as they do on land, and un like the puny black bear, they are the most excellent fisherman in nature. That grizzlies claws are going to chew right through that tough hide of the hippo like it was nothing but a can of pork and beans, or the rear door of a 63 rambler station wagon. What's the hippo going to fight with, bad breath and farts?