Part 3 is here!!! Check it out below!

As you can imagine, Sims with “Hates Jumping” trait are not good at all for competitions.
“Fast” horses are speed demons, have a natural talent for racing and love to exercise a lot. They learn racing skill faster and are good racers. Before buying a horse, keep in mind they need special attentions and to be cleaned and brushed.
Their needs are hunger, bladder, energy, social, exercise and thirst.
If you want to ride a horse owned by another Sim, you should ask him for the permission.
In Appaloosa Plains there are also some wild horses that you can adopt if you are able to educate them.