Among the greatest mysteries of the tropical rainforest are the pooping habits of sloths. Really. Those furry, slow-moving tree dwellers almost never descend from the safety of the tree tops—except ...

Their four-part stomach takes its time to extract nutrients from fibrous leaves, which helps stretch out energy in an otherwise low-calorie diet. Two-Toed and Three-Toed Sloths Aren’t That Closely ...

When you picture the jungle, your mind might jump to roaring tigers, monkeys swinging wildly from tree to tree, or bright ...