Aye-aye is a lemur, a strepsirrhine primate native to Madagascar that combines rodent-like teeth that perpetually grow and a special thin middle finger. It is the world's largest nocturnal primate. A bit scary but I find it cute!
Re: Pinner's comment: Tarsier in Bohol, Philippines- is an endangered species. "This is the smallest monkey in the world". This is not a monkey, it belongs to the primate order, but is in the tarsier family.