My cats, no question about it! These silly little furballs are the only creatures on earth who are happy to see me every day and get excited whenever I come home, even if I've only been gone for an hour. They will wake me up in the middle of the night just to get cuddles and we always sleep together in one big pile. I don't have to be anything but myself when I'm with them and that's really the best thing in the world. They make my tiny, kinda crappy apartment feel like home.