Satu
(The Class Clown)
He's known to some as Silly Satu. And, trust us, that's no accident. A bundle of energy, Satu has an endless appetite for mischief. Yet everyone agrees Satu is 100 percent loveable. He is also the father of Cinta.
Male
Sumatran Orangutan
Born: March 26, 1995
San Diego Zoo
Current weight: 145 pounds (66 kilograms)