Sloth

Sure, we've all heard of a sloth. But these are really very odd and unique creatures. There are multiple types of sloths, five types of three toed sloths or Bradypodidae. Three types of two toed sloths, and nine varieties of Megalonychidae (two toed and extinct ground sloths). Sloths are believed to have been around to about 60 million years, and are distantly related to Anteaters and Armadillos. What most of them have in common is that they all eat mainly leaves, insects, small reptiles and birds. Sloths have large slow acting stomachs with multiple compartments which in turn leads to a very slow digestion, and a very slow metabolism. This means that because of it's slow digestion it can take a month or more to fully digest something. Their metabolic rates are less than half of that of any mammal it's size, and they maintain a body temperature between 86 and 93 degrees (even lower when resting).