train a horse to pee/poop on command (or not to as the case may be.) My daughter works for Mounted Patrol (The horses you see at the mall etc patrolling the area for security)(and my son worked there too until he went into the AirForce.) We have several horses that are, in fact, "potty trained" This is how you do it. (it is similar to potty training a dog) It starts out that the rider is in fact the one "trained". :) You take them to a certain area every hour or so. When you "catch" them doing the right thing, they get praised a lot and get a treat. (alfalfa cube or something) When you take them you say something along the lines of "go potty". You continue this for a couple of weeks and they usually get the hang of it. We have a 19 y/o gelding who has been working Mounted Patrol for about 4 years now. He is SO potty trained that he WON'T go with a rider on him unless told it's ok to do so.
Several times I have ridden him and he'll start "dancing around" and I'll say "What is WRONG with him!?!?" (I forget sometimes)My daughter will laugh and say, "he has to go potty, tell him it's ok."
The reason they are potty trained is that people don't like stepping in horse poo when leaving the mall on their way back to their cars. If the horses aren't trained, then the rider must dismount and "clean up" after the horse.
As for the other stuff, I'd have to see it to believe it.