A Costa Rica rescue center offers blankets and bottle-feeding at a nursery for these young animals Photographs by Annie Marie Musselman Text by Niko Zlotnik Hoffmann’s two-toed sloth babies need ...

The sloth is the world's slowest mammal, so sedentary that algae grows on its furry coat. The plant gives it a greenish tint that is useful camouflage in the trees of its Central and South ...