Well, with really big animals like water buffalo, it's possible they could stand on their backs, perhaps using a "saddle" that makes a more convenient platform. And, of course, the tops of tank shells are conveniently flat because I say so. I suppose I could do two sets of files, one with some larger creatures allowed as mounts(elephants, water buffalo, tanks, bears once I'm done with them, horses for lulz) and one without any mounts. I'll definitely disallow mounts for buffalo, though. Does anyone know if making civ creatures mountable has any effect? Like, if I make draltha ponies mountable, will slippies and gorlaks ride them into battle? Knowing my luck, it'll be Underlords doing the riding, "Giddy up, peasant!".