The sun bear is the smallest species of bear, native to the tropical forests of Southeast Asia. They are easily recognized by their short, sleek black fur and a distinctive orange or white crescent-shaped patch on their chest. Adult sun bears typically weigh between 60 to 150 pounds and measure about 4 to 5 feet in length. Sun bears are primarily nocturnal and are excellent climbers, often found foraging for insects, fruits, and honey in trees. Their long tongues, which can reach up to 10 inches, help them extract honey from beehives. As a vulnerable species, sun bears face threats from habitat loss and poaching.