Mammals found in this forest include the apex predator fossa ("Cryptoprocta ferox"), the fanaloka ("Fossa fossana"), northern ring-tailed mongoose and numerous bat species. Lemurs occurring here include the crowned lemur, northern sportive lemur, gray mouse lemur, Sanford's brown lemur and the aye-aye. Numerous geckos inhabit the reserve including the Henkel's leaf-tailed gecko, big-headed gecko and day gecko. Other local reptiles are the Madagascar ground boa, the white-lipped chameleon ("Furcifer minor") and Oustalet's chameleon, the world's largest chameleon, which can attain 68 centimetres in length.