No fair, PDM. While technically correct, it is not in what I regard as the spirit of the question. Yes, humans are animals - some more than others, right, Jan? - but what animal other than human would you choose if you had to choose?
I still haven't completely decided. Hummingbirds are so colorful and zip here and there and cheer people up. And so do butterflies. And lightning bugs (fireflies) add a zesty gestalt to the night.
I suspect that I would be a bear, however, as I think that is my nature. I love my honey. And I am protective of her.