I've eaten pronghorn from several others' killings. It has been excellent. I've eaten Mt goat of my own killing - it too has been excellent- nearly the quality of wild sheep. The two species (pronghorn and mt goat) are not related...

IIRC, the mt goat is most closely related to antelope, while the pronghorn is way out there somewhere on it's own...

Like said above, much depends on shot placement, and after-shot care, tho individual animals can vary somewhat.

The only true cost of having a dog is its death.