ideayoda .... would you explain what you mean by, "the tongue is thrusting"?
That sounds as if they are trying to push the bit out, and that is not what I am referring to.
I have found that they are quite willing to hold the bit and "listen" to the rider's hands, and in doing that they begin to suck on the bit in a very soft manner. They know it is connected through the hands to their engine.
My older horse produces very little mouth foam. My young one produces a lot, and it's not unusual for foam to splash on her chest or legs. But I think my trainers and I are experienced enough to know when a horse is relaxed and moving well without using foam as a litmus test The foam between the hind legs is a different thing since that's produced by sweat, not saliva. I see lots of it on hot days, but on a cool day I may not get any It has no correlation to the mouth foam.
The foam between the hind legs is a different thing since that's produced by sweat, not saliva. I see lots of it on hot days, but on a cool day I may not get any It has no correlation to the mouth foam.
Some horse get foamy mouths when NOT wearing a bridle - we were lunging one in a halter the other day (for a lameness workup - he is normally lunged in a bridle), and he was a bit over hiself and prancing around, with a VERY foamy mouth! And I have seen horses being Parelli-ised with foamy mouths while being ridden in a halter...
But I agree, drool is NOT good - it is a sign of tension (or anticipated tension, or in anticipatyion of being tongue-tied for racing). A foamy lipstick is usually a sign of a nice, true contact - in my experience, anyway.
When I go to remove the bridle, the horse will still be holding and sucking on the bit. I can have the entire bridle off and the horse is still holding the bit. I have to ask for them to let go.
They are holding the bit themselves. They are in control of the bit because (hopefully) you have taught them to work from your seat and leg and they only need to hold the bit because they trust you (and you aids) and they want to work.
I have found that when my horse is truly relaxed, forward, and using his back, I get nice white lipstick with no drooling. I also get more butt foam. It's like when he is really moving well, his hind end unlocks and his legs swing more, producing more sweat. He does not get butt foam - even in the summer - unless he's working properly.
If he's tense, not swinging his legs forward, and not working over his back, I will have a dry mouth and dry butt.
He has a tendency to go behind the bit, so I avoid riding him deep and low. Someone else who has ridden him several times warms up in a deeper, lower frame, behind the vertical - he gets VERY foamy and drooly this way.