What contributes to the ambiguity between names like 'Feist,' 'Treeing Feist,' and 'Mountain Feist'?

Answer

Historical maintenance by individual hunters or families, often resulting in dogs not formally registered

The grassroots development maintained by individual hunters or families, often without formal registration with major kennel clubs, contributes significantly to the overlapping terminology.

What contributes to the ambiguity between names like 'Feist,' 'Treeing Feist,' and 'Mountain Feist'?
DogbreedCanineFeistMountain Feist