Working sheep dog Twig, 7, performs tricks for photographers amongst the Spring daffodils during a photo call to launch Crufts 2008 at the National Exhibition Centre on March 4, 2008 in Birmingham, England.

Dogs parade aroung the warning track as part of the 'Bark in the Park' promotion before the game between the Arizona Diamondbacks and the Los Angeles Dodgers on September 1, 2012 at Dodger Stadium in Los Angeles, California.

A dog swims in a pool for dogs at the grand opening of the fourth Pooch Hotel on May 3, 2012 in Hollywood, California.

Chris De Aboitiz rides a wave with his surf dog during the Surfing Dog Spectacular on March 12, 2012 at Noosa beach in Queensland, Australia.

A Chihuahua named Elwood sits with his tongue out before the start of the 20th Annual Ugliest Dog Competition at the Sonoma-Marin Fair June 20, 2008 in Petaluma, California.

A woman and her dog perform tricks with a frisbee during the 2011 State Farm Home Run Derby at Chase Field on July 11, 2011 in Phoenix, Arizona.

Becky Jones pets four year-old labrador Chubby Charlie in Northfield Birmingham, United Kingdom, October 24, 2001. Chubby Charlie was forced to go on a crash diet after ballooning to an astonishing 168 pounds.

A 3-year-old male toy Poodle named Pluto crosses a street by walking on his hind legs on June 4, 2005 in Mie Prefecture, Japan. The dog is able to walk for up to 1km on its back legs.

Best in show winner Banana Joe, an Affenpincher, poses after winning the 137th Westminster Kennel Club Dog Show on February 12, 2013 in New York City.

A dog named Lucielle Bald is seen during the 18th annual World's Ugliest Dog competition June 23, 2006 at the Sonoma-Marin Fair in Petaluma, California.

A dog sits on the front row to view designs at the Nico Didonna presentation during London Fashion Week Fall/Winter 2013/14 at Baku Restaurant on February 15, 2013 in London, England.

Rascal (L) a Chinese Crested dog meets Japanese Crested dog, Pee Wee Martini at the 2007 World's Ugliest Dog Contest June 22, 2007 in Petaluma, California.

A Shih Tzu prepares to compete in the 137th Westminster Kennel Club Dog Show on February 11, 2013 in New York City.

Eli, a Chihuahua form the Upper West Side of Manhattan, poses on the red carpet at the New York Pet Fashion Show at Hotel Pennsylvania on February 08, 2013 in New York City.

Participants in the New York Pet Fashion Show gather on the red carpet at Hotel Pennsylvania ahead of next week's Westminster Kennel Club Dog Show on February 08, 2013 in New York City.

Bob Shaughnessy holds his Havanese at the New York Pet Fashion Show at Hotel Pennsylvania ahead of next week's Westminster Kennel Club Dog Show on February 08, 2013 in New York City.

TV personality Lisa Vanderpump and her dog Jiggy attend Celebrities and the EMA Help Green Works Launch New Campaign at Sur Restaurant on January 23, 2013 in Los Angeles, California.