I think I would be a bigfoot, which is obviously the ninja of the animal world.
I would walk around naked eating berries and nuts, leaving the occasional footprint and scaring the shit out of any hikers that I saw. I would chill in the secret bigfoot cave with my secret bigfoot homies, wiggling my unibrow at bigfoot chicks while saying, "Yeah baby, my feet are HUGE!"
I would sit around with the other bigfeet and discuss the impact of the early French impressionists on the modern art movement or debate the ramifications of some of the more cutting-edge theories in quantum physics while shamelessly scratching whatever itched at the moment.
When I got tired of the conversation, I would grunt, grab my mate, and lead her to my fresh bed of pine needles where I would complement her on her muskiness while giving her a quick flea, tick, and lice inspection. Then I would treat her to a solid 8 seconds of monkey love, only better... bigfoot passion, yeah baby! Since bigfeet never bothered to invent pillow talk, I would fall asleep almost immediately afterwards, snoring loudly to indicate my contentment.
Such would be my life as a bigfoot, and it would be good.