As per scientists, horses can communicate with humans with the use of a symbol board. Till now the horse riders used to understand what the horses are trying to convey by their way of whining or neighing. But, today the horses are getting trained to understand and communicate directly with the use of symbols.
An experiment proves that at times when the horse feels cold and needs a blanket they point out their heads towards a horizontal black line. In the same way, when they want it off them, they point towards a vertical line.
The horses are rewarded with carrots while getting trained when then precisely are able to indicate the correct symbol as per their needs. It’s a proven fact that their selection of symbols completely depends on the weather conditions and is not any sort of random choice made by them.