Not always. In the pasture, Abby looks entirely calm and fine. It's only when I separate her and then I walk away while she's tied inside. She paws and her eyes get big. She just looks very anxious. Though, she's a Paint/QH and inherited sclera from her overo dam, so she always looks a great deal fearful, but it's more when she's not sure what to do. She doesn't like to be alone. She's not very herdbound anymore like she used to be though; I can take her for walks down the road without her turning and ear back to her friends.
Why do you ask, if you don't mind me asking?