Yuri begins to see his error when the thing -- and he has no idea what it is, wouldn't even if he wasn't in Kill and Destroy Mode -- turns and reaches out for him with enormous claws. For a second he skitters backwards, but then he pins his ears back and bellows as he stands on his hind legs, hopelessly outmatched in size but maybe a little less so when he draws himself up to his full height. Stupidly, he lunges right back at the jabberwock, right into its clawed grip...with, of course, mouth open and paws swinging, trying to take a chunk out of the other creature any way he can.