Not to hi-jack the thread, but what about if the horse in question is a mouthy, 6 month old colt? And isn't biting with aggression, but wants to chew on EVERYTHING.
My colt wants to nip and chew, and it's gotten to where smacking either at his mouth or with a crop at his body, doesn't really get his attention. I think he finds it to be a game. His ears aren't back, it isn't aggressive, but it's annoying as heck and I don't want it to get worse.
Do they ever grow out of the mouthy stage of wanting to put everything in their mouth? He chews on his lead rope, his halter when I try to put it over his nose, any kind of tack or clothing, just about anything he can reach, has to go in his mouth. He even ripped off and ate a piece of plastic grocery bag much to my horror- I just couldn't get it away from him before he ate it.
What do you do with a colt that isn't really being aggressive, but just has to chew on everything, including your clothes and his tack???
I am thinking he needs a small bit to wear as a pacifier.