Chanel, the world's oldest dog, celebrated her 21st birthday Wednesday, according to Reuters. The dachshund, from Port Jefferson, N.Y., received a certificate from Guinness World Records marking the occasion. "Chanel is the Guinness World record holder for the oldest living dog," said Jamie Panas, a spokeswoman for Guinness World. The record authority reviewed a veterinarian's certificate, photographs and statements from four witnesses to verify the dog's age. (ABC)
