While most horse owners or visitors to your stable will view and front of your horse’s stall, it’s actually the stall’s side partitions that do most of the work that keep your horse healthy and happy.  You want to keep your horse secure from biting and kicking by his neighbors, but want to keep him feeling “part of the herd” by allowing him to see other horses and not feel too closed in. Before discussing what makes a good stall partition , let’s recap some of the information about overall stall design we discussed earlier: While smaller horses or ponies can get by with a 10’x10’ stall, most horses need at least a 12’x12’ stall.  Warmbloods or mares with foals may require larger stalls.