I posted this in the horse section too, but I figured I'd share it with you longear people. :)
I have two donkeys: One mammoth jenny (9 years) named Lass, and one large standard gelding named Charlie. Charlie is younger and so he is lightly started and green, but already pivots on the hind end, disengages the hind, steers (starting to neck rein too), halts, walks, trots, and has ponied other equines! I started him, Lass was green broke when I bought her. I trail ride them all over the area, and trailer out to new places to ride each week.