What is the difference between a species and a race?
Species is used in the sciences, but it’s made it into the vernacular, and there it’s illustrated by an example like this — we don’t refer to a “race of dogs”. Race still refers to division by one or more visible characteristics, such as skin tone, hair color, shape of the skull, etc. Since there’s really only one race, the human race, there’s not any meaningful breeding barrier between “races”. Often a species is identified by whether it is more or less isolated from breeding with similar things (flower with flower, equid with equid, etc) and/or can be bred with a superficially different organism but produce a fertile offspring. Using species to identify fossil forms relies (ironically) entirely on the morphology, that is, division by visible characteristics.
“What is the difference between a species and a race?”
I specie can be picked up off the ground, but a race has gotta be run.