Bill is a travelling documentary filmmaker. His niece Olivia introduced him to this horse. Bill asks “Why do you like this one”? Answer: “Because he makes funny sounds.” The horse blows a raspberry. This is also called making a Bronx cheer. To humans it is a noise signifying derision, real or feigned.
Hopefully this is just a funny learned trick and not a nervous tick like ‘wind sucking‘. Horses under stress, particularly ones kept locked in stalls for extended periods of time, can develop stress habits. Perhaps this horse has learned that doing a nervous tick has gotten him rewards?
What do you think? Is this a trick? Or from stress? Or something in between?