Pygmy Slow Loris

Pygmy slow lorises can be easily identified by their extremely-large brown eyes, which help them spot prey in the dark. They are the only venomous primate — glands inside their elbows secrete compounds that mix with their saliva to deliver a toxic bite to rivals and predators. Unfortunately, pygmy slow lorises sold as exotic pets often have teeth removed to prevent venom-induced bites — this often leads to infection, malnutrition, and death. Pygmy slow lorises are also one of the few primate species that slip into torpor (an abbreviated type of hibernation).