With a lab you should be getting use to it getting in trouble by now. My oldest lab which as a puupy cost me only a couple hundred bucks but now I call her my $5,000 dog. Over the last 14 years that is what I figure we spend on various vet bills

My younger yellow lab got into the bucket that had the shells from 10 cracked crabs a week ago. It had eaten maybe a third of the shells(all its stomach could hold?). It had a number of bouts of vomiting over the next day or so before it managed to rid itself of the shell pieces. Other than being off its food for a couple days (I did cut back on the size of its rations as if it ate the normal amount it would upchuck it all back up) and some moping around it was non the worst for wear. After 36 hours or so it was back to its normal lovable/goofy self.

I would just keep an eye it and I would watch its stool and any vomit to make sure that there isn't any blood (I was worried about pieces of shells causing an injury).

BTW - I doubt that my lab learned its lesson regarding the crab shells - I have to be just more careful.

Tight lines
Curt