Brief Research and Reference

Reference: 
1) Different types of horses : http://ashleynikole.hubpages.com/hub/Different-types-of-Horses
2) Horse: http://en.wikipedia.org/wiki/Horse
3) List of horse breeds: http://en.wikipedia.org/wiki/List_of_horse_breeds
4) Horse Riding game : http://www.horseridinggame.net/equestrian-game.htm

Benchmark: 

The grass plains (path)

Horse types

Both pictures taken from: horseridingame.net

Research: 

A few types of horses that caught my eye:

The horse with the fabulous hair is called "Kiger Mustang". It said to be very intelligent (a fast learner) and can be tamed for cattle driving.

The horse with this black and white cow pattern is called "American Saddlebred". It is very suited to ride when facing a touch terrain. It could also be useful for carriage driving.

This unique cow patterned horse is called as "American Paint Horse". As the pattern suggested, it is said to have a lot of cow sense. It's suitable for Western riding since it is quick and fast. 

The dalmatian patterned horse is called "Appaloosa". This horse is very versatile since it's useful for almost anything. With it's great stamina and power on the legs, it can jump and run at high speed. It has a good character and well discipline!