A Sumatran tiger cub and a Bengal tiger cub are now roommates — and best friends.<br /><br />The Sumatran originally in the Smithsonian National Zoo in Washington, D.C., but was rejected by his mother. So, he was flown to San Diego to live with his new buddy.<br /><br />The Bengal was saved from smugglers on the Mexican-American border. Zoologists paired the male cubs, hoping companionship would be beneficial for both their physical and mental health. Their survival is critical; both species are in danger of becoming extinct. There are only 400 to 500 Sumatrans and 2,500 Bengals left. So there's much more to this friendship than cute roughhousing. <br /><br />Although let's face it, that's reason enough.
