If you haven't already heard of Koko, you're going to be amazed! She's a 45-year-old gorilla who knows sign language and lives in the San Francisco Zoo. She's been raised and taught by caregiver Francine Patterson since she was just a baby. Koko made headlines when she "adopted" a kitten after asking for one for Christmas in 1983. She named her new cat "All Ball" and cared and nurtured him like he was her own baby. It's insane to see how smart and loving an animal can be!
(Photo Credits: Ron Cohn and The Gorilla Foundation/www.koko.org)