Peer Körner / dpa / Corbis
The Rottweiler moves up on the AKC list this year, and for good reason. This breed can be silly with its family, but protective against strangers. The Rottweiler loves to have a job to do, which makes the breed a favorite for service and therapy dogs.
2011 Ranking: 10
Famous Friends: Snot (National Lampoons Christmas Vacation), Arnold (Entourage), Carl (the children’s book series Good Dog Carl)