You know, I used to love this question. I always chose a horse or a lionness. But when I think of it, a horse is purely prey animal an instinct to escape. A lionness, although athletic and wonderful with predatory skills, is still prone to being stuck in a pride where she and the other ladies are led by whatever lion wins the fight. ugh. Neither are very appealing.
I guess maybe I could choose to be a bird. A falcon, not something small and vulnerable to much attack. A falcon is quick and powerful with a good eye for prey. Yep, that's what I'd be!