Primates are generally categorized into three groupings—monkeys, apes, and prosimians. Typically thought to be more primitive than other primates, prosimians tend to be small and nocturnal. The big-eyed potto certainly fits the bill. Using clamp-shaped hands and feet, with opposable thumbs and big toes, the potto climbs slowly and carefully through the rainforest canopy, and rarely comes down from the trees. If danger is near, the potto holds very still to blend in, and can hold its position for hours. If attacked, the potto tucks down its head and projects the bony processes between its shoulder blades that act as a shield. It can also inflict a nasty bite.
The potto is so quiet and stealthy that it is sometimes referred to as the “softly-softly”.
