Well, i don't know about gene therapy applied to animanls to make them more aggressive. Polar bears are easily the most agressive bear species out there (at least according to all of the animal shows i've ever watched). The only thing out of place to me with the polar bear is the fact that it is a polar bear in a freakin tropical climate. lol

I guess its possible that the bear is some sort of hybrid. Don't think it really is cause i don't see how that would add to the story line of the show...but you never know i guess. I just narrow it down to the prop guys...