In the past few days Tango has been doing this weird thing with her mouth. She'll kind of curl her lips back and show her teeth and stick her tongue out a little. Not towards me or with her ears pinned, so no, she's no being aggressive (this horse doesn't know the meaning of the word aggressive). She doesn't do it constantly, say once in a "walking spree", but it's been going on a few days. It's almost like a yawn, or like she's stretching her jaws, but...I don't know. I've never seen it before, is it something I should worry about? Is it possible she got kicked or something and is hurting, or her teeth are bothering her? My dad refuses to call the vet unless I can prove it's something serious that needs attention, so...no help there >=( Has anyone ever seen this sort of thing?
If that's it, it's normal horse behavior. Stallions and "excitable" gelding will do it to a mare. My girls usually do it after they eat or smell something very strong or something they don't like. However, I also knew a horse who would do it while colicking, it was his pain expression. Hopefully, you know your horse enough to know if she's in pain, though.
It's sort of like that, but her teeth are apart and she sticks her tongue out a little. She doesn't seem to be in pain, and she's not the colicking type, so unless the pain's directly in her mouth I don't think it's that..But she has no problem with me rubbing her mouth or anything. *Sigh* I don't know.