The video shows two baby sloths vocalizing in a video compilation by Lucy Cooke's www.slothville.com . The video shows a baby two-toed sloth (first to appear) and three-toed sloth... well... just being baby sloths. Two-toed sloths (genus Choloepus) contain two species, while Three-toed sloths (genus Bradypus) contain four species. Of the six species of sloths, the maned three-toed sloth ( Bradypus torquatus ) is considered vulnerable and the Pygmy Three-toed Sloth ( Bradypus pygmaeus ) is considered critically endangered according to the IUCN.