quite simple answer is, if you don`t get your dog used to dykes and other obsticles when young it will proberbly injure itself badly when older and faster, and be crap at combating the same.
have seen many dogs killed and injured on dykes when they come across them at 16 month old and at full speed for the first time, important to get them working around dykes
What about just getting a young dog out and getting him used to dykes, fences etc anyway? Does it have to be hunting? Not after an argument, just discussion..........
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