The American Hairless Terrier is unique among all hairless dog breeds because it exhibits recessive hairlessness. Hairless parents can only produce hairless puppies. American Hairless Terrier is the only hairless breed that is truly hairless and bald. It doesn't have normal dog hair. However, AHT's may have very short and super fine, nearly invisible "peach fuzz" (vellus) hair covering their body.
Recessive hairlessness be among full dentition.
The American Hairless Terrier was born as the result of a natural gene mutation in the American Rat Terrier. Therefore, there are some "coated" American Hairless Terrier (Rat Terrier carrying the hairless gene) that are used in carefully planned breedings to enlarge the AHT gene pool.
GENETIC TABLES FOR AMERICAN HAIRLESS TERRIER, HAIRLESS, COATED CARRIER AND RAT TERRIER CONCERNING HAIRLESSNESS AND COATED
Hh = heterozygous coated carrier
HH = homozygous coated
hairless
(hh)  |
coated
carrier (Hh)  |
coated
(HH)  |
Parents: Hairless (hh) X Hairless(hh)
Puppies: 100% hairless (hh)
Parents: Hairless (hh) X Coated carrier(Hh)
Puppies: 50% hairless (hh), 50% coated carrier (Hh)
Parents: Hairless (hh) X Coated (HH)
Puppies: 100% coated carriers (Hh)
Parents: Coated carrier (Hh) X Coated carrier(Hh)
Puppies: 25% hairless (hh), 25% coated (HH), 50% coated carrier
Parents: Coated carrier (Hh) X Coated (HH)
Puppies: 50% coated carrier (Hh), 50% coated (HH)
Parents: Coated (HH) X Coated(HH)
Puppies: 100% coated
