Sloths Becoming America's Favorite Animals

They are known as the masters of mellow -- but there is nothing sluggish about how sloths are quickly becoming America's favorite animal. With fans like Kristen Bell and Ashton Kutcher cuddling up to them, Zoologist Lucy Cooke is the creator of Anima Planet's 'Meet The Sloths.' She visited The Couch with Dr. Marc Valitutto, the general curator of the Staten Island Zoo.<br />