Humans aren't the only animals that can recognize themselves in the mirror. A new study suggests that monkeys can, too, with a little training. (Neng Gong and colleagues/Current Biology 2015)
Humans have it. So do chimpanzees, bottlenose dolphins, Asian elephants and even magpies. The ability to recognize oneself in the mirror is known as self-recognition, and monkeys weren't thought to be able to do it until now.