 mice, prairie voles that fall in love, and swans that practice a kind of democracy. Science is proving that animals are a lot like us. There are so many abilities that were thought to be uniquely human. And then it turned out that, oh, well, you know, maybe the primates have them as well. And oh, look, they're in rats. And oh, it's not just rats. It's actually a great many vertebrates and so on.