My family has been building stock bred curdogs for generations. Some of mine are redbone/old english white and some are leapard/old english white crosses. Those being the foundation breeds of both lines. The leopard dogs we used were of the old timey, black and tan dogs. Long legged, block headed. My great grandfather bred some German short haired pointer into some of his early dogs, but we have gotten away from that . The line of white bulldogs we use make damm fine cowdogs all by themselves
That's exactly how i've always heard fl curs came into existance!