11. Rottweiler
Average Cost: $2,000.*
Origin Country: Germany
Rottweilers were first bred for work, driving cattle and pulling carts for butchers. Known for their courage and alertness, Rottweilers were among the first police dogs and still serve in military roles.
Rottweiler, Shutterstock and Sarit Richerson
Despite their reputation, Rottweilers make great pets when socialized early. Males can weigh up to 130 pounds and are very protective of people and other dogs.
Rottweilers are banned in some US cities, so always check local laws before getting one. Owning a Rottweiler illegally can result in fines and loss of your pet.