Replying to a message of Jim White to Carol Shenkenberger:

 JW> One time we heard the rock hit the floor and then he started howling
 JW> in pain.  Apparently, the rock slipped out of his mouth and fell. 
 JW> Once we got him isolated and could check it out, we found that it had
 JW> MISSED his foot, but landed directly on on of his nails, breaking it. 
 JW> NOT lengthwise as you might expect, but crosswise.  We gave him an
 JW> aspirin and vet wrapped it for the night and he was fine.  The vet
 JW> had to numb the toe and cut off the broken nail.  She said there was
 JW> little bleeding and he never complained about it since.  Nail has
 JW> grown back normally. And yes, he still gets into the food bucket if
 JW> we're not careful and he gets the opportunity!

I had a similar occurrence with Sam, except that instead of a rock it was an
ordinary concrete block.  Sam managed to knock it over and it fell on one of
his toes (the *corner* of the block), took the nail completely out.  After a 
couple of trips to the vet because the toe wasn't healing the vet took the whole
toe off, Sam now has 3 toes on one of his front feet.

--- FleetStreet 1.19+