no offense but it could be trainer error. ive seen someone ruin a pup. i had the pups baying in a pen at a young age. sent all but one down the road. the guy told me he had the pup baying a hog for 2 hrs one day before it quit, then it quit at 1hr the next day, then less and less until it lost interest..... a few days later i saw it on the dog trade as a good started pup....?
i think....no matter what you are training the dog to do you should end each session on a good note at peak interest.
if you ever plan on using this dog to find hogs keep it out of the pen.
Just like a poor kid from the country. If they are lucky they get a small ice cream cone every now and then and they can't wait to get more. Then Mama wins the lotto and he gets to eat all the ice cream he can eat on a regular basis and after a while he will not want any.
TXHog, no offense taken but I do believe we are saying the same thing but in a different way. Just my style I guess.