Dog crossbreeds, sometimes called designer dogs, are dogs which have been intentionally bred from two or more recognized dog breeds. They are not dogs with no purebred ancestors, but are not otherwise recognised as breeds in their own right, and do not necessarily breed true.
Dog crossbreeds are combinations of lineages of the domestic dog; they are distinguished from canid hybrids, which are interspecific crosses between Canis species (wolves, coyotes, jackals, etc.). Notable canid hybrids include the coydog, coywolf, dingo–dog hybrid, jackal–dog hybrid, and wolfdog.
Early crossbreeds
Several types of dog crossbreeds date from the 14th century or earlier, such as the lurcher or the longdog.
Historically, crosses between dogs of different types were more well accepted at a time when modern purebred breeds (based on the eugenics principles) did not yet exist. These types of crosses were performed to aggregate qualities of two different types in the same dog or to perfect an already fixed type of dog, always for working purposes. An example to be cited is the famous case of Lord Orford’s Greyhounds, which were improved by adding courage through the crossing with Old English Bulldogs, achieving the desired result after six generations. With the success of Lord Orford’s dogs, the practice was adopted by other Greyhound breeders and became more common.
References
Wikipedia. “Bernedoodle”