trying to jack off posted:

more spoilers

Dynamic horse testicles, they shrink in cold weather
Name your horse
You can scold or praise your horse
Whistle radius grows when the horse bond grows
Horse equipment is fully customizable, from the saddle that has golden pins to the hair
A Dutch preview said they put dreadlocks in the hair of their horse
Horses poo poo dynamically
Walk your horse around
Jump from your horse onto a moving train
Brush your horses. Arthur makes remarks about the horse depending on the horses gender
Store horses in stables so you have more backup horses
Horses die and can't be resurrected
Tell a horse to flee to spare it's life
Horses kick behind them. In one preview they even killed a man
Horses have personalities
Horses move sideways
Horses can learn tricks