I have noticed this since I got Snapple, but never really understood why she does it.
Well, Snapple tosses her head a lot, like, even out in the pasture. She never does it when I am leading her, but when I lunge or ride her she does, mostly when I ask her to canter. She does it out in the pasture too, even when she's just walking around, she'll throw her head.
What does this mean? Could she be in pain or something?