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| A hairless to hairless breeding will result in all hairless pups. A hairless dog bred to a coated carrier will result in half of the litter being hairless and the other half being coated carriers. When an outcross is brought in and bred to the hairless dog, the result will be all coated carriers. |
| A coated AHT or coated carrier is a dog that carries the hairless gene but has hair. |
| An outcross is a rat terrier completely unrelated to the AHT. |
| The coated AHT and outcrosses are very important to this breed's gene pool. A common problem with the smaller hairless male pups is undescended testicles. The rat terrier does not have this problem, so our outcrossing to the rat terrier will help produce more intact tiny males. |
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