Saving Sloths in Costa Rica Known for their leisurely lifestyle, sloths spend most of their time hanging out in the rainforest canopy. In truth, sloths are active 10-14 hours a day (or night depending on the species!). About once a week, they climb down from the trees to defecate and urinate. This is when they are most vulnerable to ocelots, jaguars, birds of prey, and feral dogs. In the area near Manuel Antonio National Park, one of Costa Rica’s most popular eco-tourism destinations, roads and development have fragmented the forests, increasing the threats to the very wildlife people come to see.