Uh... Adam, Eve that garden. I bet there were horses. Have you ever heard of history (not theory called evolution but actual RECORDED history) without horses?
Me either. ;)
Forever. Since about... well... Genesis 1:1
No.
You would have to know a lot about horses, then study to become a large animal vet at a college.
No. Bay horses are bay for life.
Horses don't become Shetlands. A Shetland is a breed of horse, and it depends on the bloodline of the horse to say whether or not it's a Shetland
Horses have become taller, stronger and are now used for show instead of transportation.
Horses don't have a tonsil like people, but they have something similar which can enlarge and become inflamed.
i do not know Mary Poppins!
Tanks replaced horses.
about 2
A mustang is one of the feral horses that inhabit much of America. (It is incorrect to call them wild horses as they are not truly wild; they are the descendants of horses belonging to Spanish settlers which have become feral.) A group of horses is called a herd.
If trained correctly, yes, they can become very successful in trotting races.
Yes, horses do grow out of their shoes. Their shoes can also become worn and need replacing because of that.