Bovinedeer

Bovinedeer is a future descendant of elk that survived the mass slaughter of species by the now-extinct human. They are now bulky herbivores that are mainly grazers, therefore, feeding on grass. They have filled the niche left behind by the now-extinct wood bison. They are almost twice the size of a modern day African hippos. They are mainly solitary, but can become social during mating seasons.

Evolution
After the Late Holocene had ended, humans are now gone, but it was already too late for some native herbivores like bison and some others. Their niche were filled by animals, including elk. Elk eventually grew much heavier and stronger, while also developing stronger antlers, which became more horn-like than antler-like. They later became purely grazers, so they no longer feed on leaves. Elk have evolved into larger and stronger herbivores known as bovinedeer.