The aye-aye (Daubentonia madagascariensis) is a long-fingered lemur, native to Madagascar with rodent-like teeth that perpetually grow and a special thin middle finger. This endangered species has an average head and body length of 36-43 cm plus a tail of 56-61 cm, and weighs around 2 kg. The body is completely covered in thick fur and typically not one solid color. On the head and back, the ends of the hair are typically tipped with white while the rest of the body will ordinarily be a yellow and/or brown color. The third finger, which is much thinner than the others, is used for extracting grubs and insects out of trees, using the hooked nail.