1. Sun bear has a close relation with American black bear while has a distant relation with sloth bear whose differentiation is earlier than Sun bear.

2. A variety of the North American black bear (Ursus americanus) that has a reddish-brown coat.

3. The American black bear is found only in North America.

4. Phylogeny trees show that brown bear and polar bear is a sister group, American black bear has a close relation with brown bear and polar bear, but has a distant relation with Asian black bear.

5. Josh Herbert, a US high school wrestler and football player, wrestles with his pet Buddy, a 204kg, 8-year-old North American black bear.