Buck has stiff hind legs

Yikes...deer in the pastures are bad? Our neighbor feeds all the deer in the county, which not only makes them hang around and eat up the browse I need for my animals but also leads to more deer-car accidents (grumble). They jump in and out of our pasture all the time. We have no way to keep them out.

But thankfully the buck hasn't shown any signs of a progressive-type problem and none of the others have any problems at all.