[nvnvgirl]

I think actually the big deal at first was b/c somebody's dogs had eaten them (which they were supposedly intended for that purpose) and whatever they were made of, balled all up in their stomach and caused obstructions that some pets died from.
I believe they reformulated them and now they're supposedly safe from that issue, but other people have had choking problems with them in smaller dogs. I still don't use them just b/c of what happened at the beginning....many people swear by them though for their dog's teeth (meaning not the pill pockets but the 'toothbrush").