Cesar Millan's Daddy the pit bull dies. 'Dog Whisperer' mourns

cesar-millan-daddy-dog-whisperer-500.jpgCesar Millan, the Dog Whisperer, has lost his best friend.

Daddy, his pit bull and constant companion on the National Geographic Channnel show "The Dog Whisperer," died peacefully on Friday (Feb. 19) at the age of 16.

"In Memoriam: Daddy the Pit Bull" Millan posted on Twitter the next day, linking to his official website, which includes pictures of Daddy and a statement about his death.