From photographer, zoologist, and sloth lover Lucy Cooke, here is a year of the irresistible residents of sloth sanctuaries in Costa Rica doing what they do best: sleeping, cuddling with their friends, nibbling hibiscus flowers, and literally just hanging around. The photographs are accompanied by captions and fascinating facts about sloths: Did you know that if two males encounter each other in nature, they will fight by exchanging (very slow) swipes?