Hi Tonedog. Your talking about the Hottentot hunting dog which was the ridged native breed used in the creation of the Rhodesian ridgeback.

These small native dogs were crossed with hounds both scent hounds and sight hounds. Great Dane blood was also infused along with heavier mastiff. Stickbeard dogs showed Deerhound or Wolfhound crossings as well.

The observation was made that the dogs with ridges had better lion baying ability. A dog predominately sighthound has severe limitations when facing a lion. The build of the dog gives it less lateral movement when facing a dangerous predator.

If you ever get a chance to have a look at Tom Hawley's book on RR have a look at Barnes dogs. They are not lightweights.

There was a movie made years ago. I think in the 70's called When the North wind blows. It's about Siberian tigers. Worth a look. That way you can get an idea of what I'm talking about.