Simulation horse games?

I've taken a new interest in horses and caring for them and stuff and sense I can't have a real horse, I'm looking for a DS game that involves horse. I have Harvest Moon but that doesn't really involve them. Are there any good horse games?Simulation horse games?
There's a really good game called Mary Kate and Ashley winners circle or something. It's a horse game, you can take care of the horses, buy clothes, and ride them.

Also in October the sims is coming out with a pets game that invovles horses, so you can ride and take care of thoseSimulation horse games?
have you tried petz horses? i have it for playstation and really enjoyed it :D

pores