Your horses boredom habits!

Kali does something similar - but with his mouth open and his tongue sticking straight out . . . sort of at the end of a yawn - but then he is a bit special :). He also reaches round and turns his stable light on and off with his nose, opens and shuts his stable window, plays with his headcollar and shakes the rugs over his door until they fall off.

P
 
That looks more like a stereotypie (used to be known as stable vice) I would actually be quite concerned for my horse's mental welfare if he/she did this.
Fortunately mine don't, maybe that's because they live out 24/7, maybe I'm just lucky :)
A friend of mine had a Haffy that used to make the most amazing slurping noise when she saw a bucket, that was really funny :D
 
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