The head of the horse. 
A horse being ridden by a man. 
A grey and white horse with someone on it. 
A horse's head that had been prepared for riding. 
the head of a horse
Man is wearing grey pants
Horse has a brown mane
brown saddle on horse
person riding a white and brown horse on grass covered ground 
The horse walking with the man
The man on horseback
person riding a gray horse
a person riding on a gray horse while walking through a field