Elephants don’t get cancer. Well, they do, but nowhere near the rates that humans do. There are a few theories – they have better genetic defenses against cancer, they don’t have bad habits like smoking and obesity, and they reproduce throughout their life spans so that evolution selects for traits that keep them healthy late in life. Which reminds me of the weird science fact that humans and two types of whales are the only animals on earth that go through menopause.