What are the historical northern and southern limits of the cougar's native range in the Americas?

Answer

Southern Yukon Territory and the southern Andes Mountains

The cougar's territory historically stretched from the southern parts of the Yukon Territory in Canada down to the southern Andes Mountains in South America.

What are the historical northern and southern limits of the cougar's native range in the Americas?
animalmammalclassificationÇatcougar