dogs

Oh, I don't wanna share you with nothing else, I gotta have you to myself. iStockphoto hide caption

Dogs throughout Latin America carry the Chagas parasite — and boost the risk of people catching it. And it's not just shelter dogs, like these in Mexico, who are at risk. Even family dogs get the deadly disease. Jose Luis Gonzalez/Reuters/Landov hide caption

In June, the 167th Patrol Dog Class graduated from their canine narcotics and electronic media detection training, held by the Connecticut State Police Canine Unit. At far left is Thoreau, who now helps police in Rhode Island find computer hard drives. Daniel Owen/Courtesy of The Hartford Courant hide caption

One of several free-roaming dogs who live on the beach at Punta Santiago in Puerto Rico who have formed a loose association with a group of homeless men also living on the beach. Courtesy of Adriana Pisano Beaumont hide caption

All in the name of science: A dog gets his brain scanned as he listens to human and canine sounds, such as barks, growls, giggles and laughs Courtesy of Eniko Kubinyi hide caption

The face of true love? iStockphoto hide caption

Sky, a wire fox terrier, is shown here competing in the terrier group before winning best in show at the Westminster Kennel Club dog show Tuesday. Frank Franklin II/AP hide caption

Members of Taliban holding what they say is a U.S. military dog. YouTube hide caption

A fish that knows the way to go: the Chinook salmon, which appears to use the Earth's magnetic field to navigate ocean waters and rivers. Jeff T. Green/Getty Images hide caption

The Taliban holding what they claim is a U.S. military dog. YouTube hide caption

The sexually transmitted cancer is common in street dogs around the world. Noel Celis/AFP/Getty Images hide caption

Can a pup get a little privacy, please? Justin Sullivan/Getty Images hide caption