Bos proximos
It does not take long in the future for new species to appear. In some cases, this is the result of hybrid speciation. In the wake of humanity, some of the millions of cattle that were domesticated across the continent of North America managed to successfully integrate back into the wild. These were primarily hardier breeds such as Texas Longhorn. By one million years in the future, these have intermixed with surviving populations of American bison.
Beefalo are the largest animal species in the immediately post-human Americas, with an average shoulder height of 1.7 meters. They are common in open areas across the two continents. Beefalo are very hardy and can be found in many habitats, from tropical forests to open scrubland. Social group size varies with habitat; prairie beefalo live in larger herds than scrub or forest beefalo. Despite their size and the large horns on their heads, they are commonly preyed upon by packs of coydogs.