Patrick Callaghan is the one that's well known in California. I don't know if he does trainings in Texas. Well worth the time and money invested though unless you've got a dog that has an extremely high pain tolerance and extreme prey drive. Though it worked very well for an aquiantence of mine who was running a 10 dog malamute team up a trail and the lead dog turned the whole team around twice. The musher throughly irked got out to see what had happened and she saw a rattlesnake laying in the middle of the trail just up ahead. The lead dog saved the whole team for incurring multiple snake bites.
