I got my mare in August and I've noticed that every time I go to reach for the bridle she starts yawning. I always just thought that it was funny and cute. I recently read that yawning can be a sign of ulcers, and since she is prone to ulcers, I started wondering. (By prone I mean that she eats a lot of grain, is nervous about a lot of things, and is worked a lot. But, she also has free choice hay all day everyday). I also know that yawning is a sign of relaxation and her being calm.
So which is it? Yawning for relaxation or yawning for ulcers?