I’ve always been intrigued by the Carolina dog. These dogs probably came over with the Amerindians from Asia across the Beringia land bridge and new DNA studies show that they have different genetic markers than European breeds. They also still live in remote, wild places of the Carolinas living as they have done for thousands of years. The Carolina dog goes into heat only once a year unlike European dogs who go into heat twice a year. They also dig gallon sized snout holes for finding minerals and or grubs.
The Carolina Dogs yellowish coat gave them the name the first settlers called them, yellow dogs. Remember Old Yeller, yeah he was a Carolina dog. I had also heard that they had some sort of adaptation to help fight heart worms but I can’t find anything about it on the internet, too bad.
There is an informative article on them in the Raleigh News and Observer