Bittle

Bittle is a future descendant of feral cattle that survived and filled the niche of the now-extinct American bison, hence their name (cattle + bison = bittle). Bittle are about the size of the extinct wood bison, but are about as social as the extinct plains bison. They are grazing herbivores that feed on grass. They have long fur for insulating in case if any cold temperatures do occur.

Evolution
After the Late Holocene ended, humans are now gone, but sadly, American bison went extinct due to habitat loss. Feral cattle had filled their niche and become more and more social over time. They lost fur color and horn size variation of their domestic ancestors until each adult cattle resemble each other. Their fur grew longer in case if any cold temperatures do happen. Feral cattle have evolved into bittle.