No, not stocks. I mean the animals. I don't know I'm not an animal expert so you tell me. For argument's sake lets say it's a grizzly bear, vs a Spanish Toro Bravo bull. Things we know: The bull does seem more aggressive. It is naturally equipped with a weapon, it's horns. The adults are also typically heavier than the grizzly. I don't know. If I had to wager I'd say the bull might win? But the girzzly can use it's claws and hand and is a strong mofo. The bull only knows to head ram after gaining momentum from a charge, and maybe use a strong hind kick from time to time. In a flat field the bull might win most of the time, but in confined spaces such as in a forest, the bear might. It's a tough one.