Hey everyone, I have a 6mo old Pitt who is by far the most stubborn dog I've ever seen lol. I've got all the basic stuff down to a science (sit, lay down, stay, etc.) but when it comes to shake I'm at a standstill. I've tried treats, showing him, tricking him, everything but he just looks at me like I'm a nutjob lol. I know repetition is the key, but any hints and tips would be great!