We have detected this haplotype in lots of breeds, and it occurs most commonly in German Shepherd Dogs, Maltese, English Springer Spaniels, and English Setters. (my.embarkvet.com)
Lots of breed mixes make excellent farm dogs and are available at shelters, rescues or in «free - to - a-good home» advertisements in local newspapers. (cuteness.com)
They have been developed by crossing lots of breeds, mainly from gundog, terrier and hounds, but mastiff types and indigenous African hunting dogs are in there too! (rhodesianridgebacks.org)