AP Photo/Tina Fineberg
Basset hounds Gladiator, left, and his cousin Lola, touch noses in the lobby of the Pennsylvania Hotel, on Valentine's Day 2010, in New York.
AP
Chinese Shar-Pei puppies are displayed for sale during the International Spring Dog Show in Havana,Cuba, April 2006.
AP Photo/Jeff Roberson
Pit bull puppies are seen at an emergency shelter that has been housing hundreds of dogs seized as part of the largest dog-fighting raid in U.S. history in November 2009, in St. Louis, Mo. Dozens of American pit bull terriers netted in the largest dog-fighting raid in U.S. history are finding homes despite naysayers who predicted aggression or trauma would make them unsuitable as pets.
GETTY IMAGES/Chris Graythen
After being left by their owners for more than 19 days, a group of four puppies were rescued in the Ninth Ward in Sept. 2005 in New Orleans.
GETTY IMAGES/Chris Graythen
Sgt. FSC. Beth Roxworthy smiles as three rescued puppies vie for her attention after being left by their owner for more than 19 days during Hurricane Katrina in the Ninth Ward in Sept. 2005.
AP/PA
Actress Lucy Liu holds two Pomeranian puppies while department store owner Mohamed Al Fayed, right, looks on, as she officially opened the store's January Sale, Jan. 2005, in Knightsbridge, central London.
AP Photo/ Seoul National University
In this undated photo released by Seoul National University, shown are the world's first transgenic female beagle dogs carrying fluorescent genes that make the canines glow red.
AP Photo/Damian Dovarganes
James Symington poses with five puppies cloned from a German shepherd that reportedly took part in the search-and-rescue effort after the 9/11 terrorist attacks, June 2009 in Los Angeles, Calif.
AP Photo/Ahn Young-joon
The world's first cloned dog Snuppy, right, looks at its puppies at Seoul National University's College of Veterinary Medicine in Seoul, South Korea, Sept. 2008. Snuppy has now become a father.
AP/Patrick Schneider, Observer
Firefighter Jeff Clark, from Engine No. 4, gets the lick of love or thanks from a dog he found safe and sound during a house fire July 1999, in Charlotte, N.C.
AP Photo/Dave Weaver
In this July 2009 photo, Pet Airways co-founder Alysa Binder holds her dog, Zoe, in Omaha, Neb. The first-ever all-pet airline will fly dogs and cats will fly in the main cabin of a Suburban Air Freight plane retooled and lined with carriers in place of seats.
AP Photo/Friederike Range, PNAS
This photo provided by the Proceedings of the National Academy of Sciences shows the dogs' obedience training in action. The partner dog is sitting next to the subject and waiting for its turn. The owner is standing in the middle behind the two dogs.
AP Photo/Mustafa Quraishi
Spectators throw flower petals as two newly married pooches walk down the aisle at a mall in New Dehli, India, Aug. 2008.
Owners submitted photos of their dogs, and event organizers provided then with a select choice of mates for their pets.
AP Photo/Al Grillo
Lance Mackey sits with two of his dogs, Larry, left, and Handsome after winning the Iditarod Trail Sled Dog Race in Nome, Ala., in March of 2008.
AP Photo/Henny Ray Abrams
Sadie, a Scottish terrier, takes part in the terrier group at the Westminster Kennel Club Dog Show at Madison Square Garden Feb. 2010 in New York, N.Y. Sadie won her group.
AP Photo
Stump, a Sussex spaniel, poses after winning Best in Show during the 133rd annual Westminster Kennel Club dog show in Feb. 2009 in New York, N.Y.
AP Photo/Chris Carlson
Mike Schelin is shown here riding a motocross bike with his dog Opee, a 8-year-old blue merle Australian shepherd, in Perris, Calif.
AP Photo/The Press Democrat
Animal activist, model and TV host Beth Ostrosky, right, kisses Gus, a pedigree Chinese crested from St. Petersburg, Fla., winner of the 2008 World's Ugliest Dog Contest held at the Sonoma-Marin Fair in Petaluma, Calif.
