How does a dog stop a pig running without putting teeth on it?
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By getting in front and working on the head end. Not all dogs can do it of course, but this is how stock bred curs work.

As for controlling catch Hyan, it involves having a handle on a dog. Handle that is achieved by working with a dog day in and day out. I won't own suicidal dogs. They must have some sense and catch smart to make my cut. A shock collar can be a useful tool in this process, but for the most part it goes back to the type of Bulldog we put in our dogs. That alone eliminated a lot of headache from the get go. Proud to say that we started with cur dogs over 120 years ago and will end our existence with them