Why does my horse show its teeth sometimes?

She likes to put her head up and curl her lips back. What's the deal?

Why does my horse show its teeth sometimes?
She's smiling. :)
Reply:She smells something great and thats how they take it in. Studs will do that when they meet mares.
Reply:All about the horse read it its great information.











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Reply:She is taking in different scents. This is called the Flehmen Response. If you want to read more about it go here: http://en.wikipedia.org/wiki/Flehmen_res...
Reply:She is taking in different scents= Flehmen Response. Smelling something great. Greeting another horse
Reply:My horse does that all the time.I think it could be anything maybe the horse is bored.My horse does it at random and also when I give him a treat.It could be if you give your horse a treat he just really likes it.
Reply:your horse is smiling.....