Which coat variation is explicitly mentioned as not recognized by the AKC, often suggesting recent outcrossing if encountered?

Answer

Solid Black

The text states that the AKC does not recognize solid black Bloodhounds, and if encountered, it is usually suspected to be the result of a recent mix with another breed.

Which coat variation is explicitly mentioned as not recognized by the AKC, often suggesting recent outcrossing if encountered?
colorbreedBloodhound