My girl doesn't eat them, but she does love to play with them.
Originally Posted By: MaggieRoseLeeMay also be a condition called 'pica'. Here's some info on it:
http://www.azcentral.com/families/articles/1224wvpetadvice1224Z3.html
http://www.naturalcanine.com/Merchant2/merchant.mv?Screen=CTGY&Store_Code=TNC&Category_Code=PAERCWE
http://www.nhahonline.com/d_appetite.htm#ROCK%20EATING
http://www.drjeffnichol.com/dog/faqs/rockeating.html