Horse butt blend

I was hoping to get this up earlier, but this is the horse torso/butt with a fairly basic rig (except for the tail hole, that's got some more fancy stuff going on)

This one is a bit different than the rig I'm using in the animation, first it has custom bone shapes for easier selection! Pole targets for the leg IK, some more helper bones to help with deformation... that sort of thing.

I didn't want to post it without adding at least custom bone shapes :x if I make any major adjustments I'll post an updated version.