Is there any wild horse games were i am the horse?

I stumbled apon a game like this last year, but i dont remember what the web adress was... You could be eather a cowboy or wild horse... Does anyone know what this game is? Or any games like it???|||The closest thing you can become a cowboy that I could think of is in Red Dead Redemption for the PS3 or Red Dead Revolver for the PS2|||Theres a game where you can become a wild wolf..