Bearboar

Bearboar is a future native American descendants of the introduced wild boars that evolved into larger omnivorous species. They are much more aggressive and more slothful than their ancestors due to developing the ability to hibernate like the extinct polar bears, brown bears, and grizzly bears, and the surviving North American bear species, the American black bear. Bearboars are also about the size of a Kodiak brown bear.

Evolution
After the Late Holocene ended, humans are now gone, but it was already too late for polar bears, American brown bears, and grizzly bears, which had became extinct. American black bears have survived the extinction, but they remained mostly unchanged from their Holocene ancestors, so a different animal had to replace the polar bears, brown bears, and grizzly bears. Wild boars were the animals that replaced the extinct types of bears. Wild boars grew much bigger, more omnivorous, and more aggressive than their ancestors. They also evolved the ability to hibernate like some species of bears. Wild boars had evolved into bearboars.