Specialised tendons in the sloth’s hands and feet lock into place ... They have an incredibly large and permanently full four-chambered stomach, which can account for up to 30% of their body ...

The species is notably smaller than other species of sloths. An adult pygmy three-toed sloth weighs between 5.5 and 7.7 pounds and measures 19 to 21 inches in length. Their external ear canals are ...