 This sloth , like other sloths , is arboreal ( tree @-@ living ) and feeds on leaves . It is symbiotically associated with green algae , that can provide it with a camouflage . Details of mating behavior and reproduction have not been documented . The pygmy three @-@ toed sloth is found exclusively in the red mangroves of Isla Escudos de Veraguas , restricted to an area of 4 @.@ 3 square kilometres ( 1 @.@ 7 sq mi ) . A 2012 census of pygmy three @-@ toed sloths estimated the total population at 79 . The IUCN lists the pygmy three @-@ toed sloth as critically endangered . 
