Borealofelis

Borealofelis (meaning "Northern cat") is a large felid of the subfamily Pantherinae native to North America. They are the descendants of lions. With most males exceeding 250 kg (550 lb) in weight, it is the largest living cat. They are also the apex predators of North America, so it has no natural predators.

Biology
Borealofelis have thick fur, that helps them keep warm in winter. They also have no mane, like the African lion (As lions will grow larger manes in captivity if they are in a colder place). They stand about four and a half feet tall and can weigh about two-hundred and forty pounds. They are white in color, than it's African counterpart.