Once a yapper always a yapper,some dogs just yap i have had good dogs which work hard and good but in some situations they open up ,all my dogs are brought on very slowly droppers ,ferreting ,mixi rabbits never over stressed i,d rather leave a young dog at home and keep basic training it than risk an impossible catch .i had a hancock bitch trained to perfection, jumping,retreiving,walking at heal a good strong bitch started entering her at about 1 wow what an awkard pain in the ass,would not strike or pick up she would run a rabbit till it gave up .i was very patient but she eventually started