We all know how contagious yawning is. Just reading this right now you’re fighting back the urge to yawn. It’s ok I’ll give you a minute because, I too, am at the mercy of this funny reaction!
Alright now we are ready! So, why do horses yawn? They are not actually tired. They are releasing endorphins after built up stress from an event or training. This means they are relaxing and decompressing. Yawning also helps them if they aren’t getting enough oxygen just like us it’s an subconscious reaction in order to bring oxygen levels up. So don’t worry, yawning is a good thing!