Which two recognized breeds were instrumental in developing the Mountain Feist according to the text?

Answer

Rat Terrier and Teddy Roosevelt Terrier

Feists proved so effective in their historical roles that they were instrumental in the development of other recognized breeds, specifically mentioning the Rat Terrier and the Teddy Roosevelt Terrier.

Which two recognized breeds were instrumental in developing the Mountain Feist according to the text?
clubDogrecognitionMountain Feist