If I was the last person on the planet, I think I would eat a dolphin. Everyone who would judge me for it is already gone, and it's not like I'd actually hurt the overall population of any animals all on my own anyway. Hell, if anything I should eat some of the ones that are just going to die off anyway to make them useful, like fuckin' pandas. Can't even get it up in a zoo where they literally have nothing better to do than mate.