Trainee sloth wranglers get to feed the sloths and help exercise and potty train the babies . Sloths have very few natural predators . Costa Rica 's roads and power lines threaten its sloth population . Aviaros del Norte is the country 's only sloth sanctuary .
Sloths have very few natural predators . Costa Rica 's roads and power lines threaten its sloth population . Aviaros del Norte is the country 's only sloth sanctuary .