Talked to my aunt recently and Roscoe has bonded closely to two of her horses. Especially Sandman. So much so, that my aunt has to take Roscoe with her if she goes riding with Sandman. And vice versa. (That is when she takes Roscoe to the corral, Sandman throws a fit if he can't go too and be with Roscoe). Roscoe will probably never be ridden. He's only 500 lbs.