Dogs and wolves are the same species because they can procreate with each other. The border collie is the same species as the pitbull and arctic wolf. A female wolf can carry chihuahua puppies to term.
Whites, blacks, asians, and hispanics are the same race because they can procreate with each other. The framework of the human is the same across the races. The differences are all adaptations.
Blacks never needed to learn how to plan for the future because they lived in the warm, year-around stable climate of Africa. Whites and Asians never needed dark skin because they lived in the northern hemisphere climates of Eurasia.
These differences seem like they matter from a cultural perspective but on the biological scale for the species itself, they mean nothing. The only race with potential for non-human DNA are European whites with an insignificant 3% of Neanderthalis remnants tops. We are all human.
You can hate blacks, but this argument that they're a different species is dumb. Just call them niggers and move along.