False. There are physical differences between and among races, ranging from skin color to stature and everything in between. At least that is what I learned in my human races classes.
If you disagree it would be well to provide some evidence.
O.K... Domestic dogs are all dogs they just look different..
Domestic cats are all cats they just look different..
The Race of humans divides humans on even less criteria than dogs and cats.. An Eskimo, Pygmy, Watusi, and citizen of Boston or Detroit are the same "kind".. Race in humans has been conflated to mean far more than it really does.. I think it stems from various Eugenic memes.. Ideas built on false data.. and databases..