Breeds

The following is a list of breeds where the Whitehead trait can be observed. 
List compiled by Corinne Benavides-Gyger
Note - it is not yet known if Whitehead is the same trait in all breeds and/or breed groups.

Herding Breeds

Australian Shepherd, Border Collie, Bearded Collie, Cardigan Welsh Corgi , Pembroke Welsh Corgi, Shetland Sheepdog, Old English Sheepdog, English Shepherd, Miniature American Shepherd


Livestock guardians and Mountain Dogs

Bernese Mt. Dog, Greater Swiss Mt. Dog, Saint Bernard


Terriers

Jack Russell Terrier, Fox Terrier, Bull Terrier


Bully Breeds

English Bulldog, Boston Terrier, Boxer, French Bulldog, American Staffordshire Terrier, Staffordshire Bull Terrier, Alapaha Blue Blood Bulldog, American Bulldog


Primitive Breeds

German Spitz Mittel, American Akita, Yakutian Laika, Icelandic Sheepdog, Finnish Lapphund, Karelian Bear Dog


Hunting Breeds

Beagle, Springer, Catahoula Leopard Dog, Basset Hound, Welsh Springer Spaniel, Spanish Water Dog


Toy Breeds

Tibetan Spaniel, Cavalier King Charles Spaniel, Chinese Crested, Papillon, Japanese Chin, Shih Tzu, Tibetan Terrier


Sighthounds

Ibizan hound, Whippet, Greyhound, Italian Greyhound