animals July 24, 2018 3:11 pm 10 Most Common Dog Breeds in Shelters Every year approximately 3.3 million dogs enter the shelter system. These are the 10 most common dog breeds found in shelters nationwide. 2:07 Wondering what to expect when adopting a new pet? Remember the 3-3-3 rule 1:33 Why celebrity dog trainer Tom Davis says the pit bull is his favorite breed to train 1:14 2-time Super Bowl Champ George Karlaftis’ dog, Ralph, ‘is family’ 1:03 Clear the Shelters returns for 10th campaign 1:46 Dogs, cats, turtles, tarantulas: US Olympians love their pets