Very little is known about the biology of the pygmy three-toed sloth, although much can be inferred from what is known about three-toed sloths generally. Three-toed sloths are arboreal folivores that eat the leaves of a variety of trees. This is an energy-poor diet, and these animals have a very low metabolic rate (3). Their main defences are camouflage, stealth and stillness, whereby they avoid predation largely by avoiding detection (3) (5). However, should they be attacked, sloths also have a remarkable capacity to survive due to their tough hides, tenacious grips and extraordinary ability to heal from grievous wounds (5).