I've just started to really work with my otsb, and I'm a huge treat giver. Especially while training. I don't give them a treat for a everything, but I do give them a few treats while grooming, during stretching exercises, for tricks, etc.
I've found out the hard way that Snafu, the otsb, is very obnoxious about it.
He will get angry and pout if I don't give him a treat while tied up. He won't stand still while I try to groom him b/c he keeps turning around to try and get a treat. While I'm riding him, he'll stop everything and bend his neck to his butt hoping to get a treat (I have him stretch like this on the ground for a treat). I've come to realize that he is now only allowed a treat when I first get to the barn, and just before I leave. NONE OTHERWISE. Lol
My mare is a completely different story, besides following people around while smiling, she never really begs for a treat. She'll be the first one to the gate if customers want to feed them carrots, but what horse wouldn't? Lol She'll turn her head once and a while I groom her and I'll give her a treat, but she doesn't do it nonstop and she doesn't move from side to side either. I don't think she's too spoiled from it.
I have a friend who feeds her horses treats like a supplement with their grain. She always adds a few treats to their meal. Now I don't think I'll ever go that far, but yea...
I guess some horses handle it different than others. Do any of you have problems with horses and treats? While training or any other time?