I like when horses have good all-around ground manners, but there are some things that I'm more insistent on than others. I'm a stickler for: - Gate manners. My horse is always to stop before going through a gate or doorway, wait for my say-so to go through, stop whenever I tell him to, even if he's halfway through the gate or door, and wait patiently on the other side while I latch it. - Feeding manners. My horse must back up, wait for me to put the food down, and only go to the food when I say 'okay'. He also had to stop eating whenever I ask him to. For treats, he has to back up or yield in some way before he gets treats, and no pushing, nipping, crowding, etc is tolerated. - Aggressive behaviour towards other horses. He is never allowed to pin his ears, nip, bite, kick, charge, swing his hind end towards or otherwise try to dominate another horse while a person is there, whether in the saddle or on the ground. Even if the other horse's handler is at fault and he gets crowded, run into, nipped, etc, he is still not allowed to act aggressively. He can do all that stuff in the pasture, where a person can't get caught in the crossfire and injured. Horses that have bad manners in these respects are my biggest pet peeve, and after having dealt with them for many years before I got my own horse, I decided that, as long as I could help it, I would never again have a horse push me over to get through a gate, get to his feed or get at another horse. Not to say that other ground manners are not important, but these are my big three that I've personally found to be most useful in everyday scenarios, and quite dangerous when they are not respected. What ground manners are you really picky about?