FYI: Look closely at the enlarged pictures of the back [missing] leg. You can see 'scrape marks where someone removed the leg, and then started to smooth it out. Apparently, someone heard about the 3 leg Buffalo, and tried to make one, using the wrong leg
That would make sense, though it must’ve been a good job or done a long time ago, the tool marks are even hard to see under a magnifying glass. Neat though lol