Purebred dog
Purebred dogs are dogs whose ancestors are all the same breed.
A breed of dog is a particular subspecies that has been bred through time to exhibit certain characteristics, for example a bulldog is bred to be short and have a flat nose while a greyhound is bred to be light and run fast. Some dogs are bred to look special which is why poodles have fluffy hair.
Purebred Dog Media
Sled dog types, sketched in 1833
Tesem, an ancient Egyptian sight-hound
Chihuahua mix and purebred Great Dane