Humans are primates—we’re part of the same family as gorillas, orangutans, and chimpanzees. A little more distantly related are monkeys, and even further removed is one of our strangest cousins: the aye-aye. Aye-ayes are a kind of lemur. Like all lemurs, they’re found on Madagascar.

They might be strange-looking, but their features are specially adapted to their lifestyle. Their big eyes help them to see in the dark, since they’re nocturnal. Their strange teeth and hands are useful too. The aye-aye taps on trees to find grubs, and then it chews a hole in the bark with its rodent-like teeth. Then, it inserts its extra-long middle finger into the hole so that it can pull out its dinner!

Photo by James Joel