Okay, don't release into the wild. Just a large dog island where dogs can live peacefully the rest of their lives.

Just a minor correction, they're still all the same species. A black person and a Chinese person (who may also be black by the way) can still have babies because they are both human. Dogs are all canine cans of whatever. All one species. The only thing we have accomplished is to select for phenotype traits. Like getting a slave with frecles to have a baby with another slave that has freckles and then repeating that a few hundreds of times until you make a human tha has really strong freckles. That's called eugenics. They are still human species.

"Race" is where the evil racism comes from, but race itself is a non-scientific term. So don't use that. Don't confuse the term to give it validity. Should we then stop being racist tomorrow? Yes absolutely. Right now at this very moment would be a great time as any other past or present. Should we then stop using the words race and racism now? They're non scientific afterall. No, probably not. If you don't name it, its impossible to take action as a whole against it. So shall we release the dogs into the wild? Well maybe into an island where they can find easy to catch pray. Dogs can eat bugs, mice, birds, etc. And dogs can be eaten by other animal too. We humans and other humanids and apes were once part of the food chain too. Lion, and other big cats still hunt us down for example. Another example is bears. This week in Anchorage Alaska they put down a mother bear and cub because they ate two people. There's not enough non human food around and humans have taken over their habitat, their island. Mice have never ordered a dog to be put down for predation. They'll do fine.