What is a commonly cited physical distinction of the Mountain Feist compared to the smallest general Feists?

Answer

It is often associated with a slightly sturdier or larger build

The Mountain Feist is generally understood to be a specific strain within the broader classification, often described as having a sturdier or larger build than the very smallest dogs carrying the general Feist label.

What is a commonly cited physical distinction of the Mountain Feist compared to the smallest general Feists?
DogbreedCanineFeistMountain Feist