We have a 2.5 yr irish sports horse who is big and strong. Join up and follow up is all fine. We've been working on walking around the farm and school at walk and trot, backing up, standing, etc and doing reasonably well. Using dually. The problem is that he just wants to put everything in his mouth. We lead and he takes he rope and clasp and rolls it around his mouth, he will take the hood of my coat, will take anything he find laying around (head collar left near him, towel, etc). Putting on his dually is a bit of a mission because if there is anything he can reach ... Yep, you guessed it, it goes in his mouth. When we are just being sociable he wants to lick your hands, arms, etc, All sounds like you should say "ahhhh bless" but he quite often goes for a little nip as well. He doesn't mean to hurt but it is can and it is bad manners,
I've schooled. Dipped the lead rope in vinegar. Tapped his shin with my boot. Sent him away. Is he getting the message. Nope! He persists.
He is a bit spirited so we eliminated carrots, food containing molasses.
He has some wolf teeth coming through. He is also in a field on his own.
So, teethng and just be patient? School it now at all costs. Just let him grow out of it? What is the best thing to do?