0_Apprentice
I enjoy riding horses in my free time. Do you?
1_Wizard
Horses in the Middle Ages differed in size, build and breed from the modern horse
0_Apprentice
That is true! My uncle raises horses, specializing in Pony of America horses which are bred to stay small, and American Quarterhorses the "typical American" horse
1_Wizard
evolution of the horse, a mammal of the family Equidae, occurred over a geologic time scale of 50 million years, 
0_Apprentice
What are some horse breeds you are familiar with?
1_Wizard
 Arab horse ( , DMG "ḥiṣān ʿarabī") is a breed of horse that originated on the Arabian Peninsula
0_Apprentice
the Clydesdale is also known as the gentle giant
1_Wizard
Horses are particular used for  use of horses for practical working purposes, transportation, recreational activities, artistic or cultural exercises and competitive sport.