I left the Catahoulas alone started using yella dogs because of exactly what mike said. "They started being bred for color to make a dollar instead of working ability". Yellow dogs dont have the novelty of the catahoula so I dont believe they will get as bad off, but there are still some folks that have true catahoulas and they dont have a bunch of loud patch work and they resemble nothing like we see today. They are 80lb dogs with block heads and typically not a loud color and maybe one glass eye if any at all and they are pretty much straight catch dogs on a single hog until you get them broke, but can take a rank cow down like a bulldog. I have been thinking about trying to talk Mr. Murray out of one before he gets too old to fool with them. The last two out of his line I saw were some serious working dogs that his son used to catch loose cattle, and they would rival the heart and grit of any cur dog and maybe a bulldog.
I tend to stay away from the cats for the same reason but I would love to own a couple that would really get the job done. I fear that yellow dogs are going the way of the cat. Im holdin on to the ones ive got for dear life.......they may not be the best but they work for me!