It was probably just a moth, happens a lot. And it probably had nothing to do with the store you purchased them from but when it was packaged at the plant. Either that, or it was in the box, not the bag. Happens a lot at work when I refill our dog bar. Moths aren't bad and there is most likely NOTHING wrong with the biscuits at all In fact, you probably eat a bug or two every day and don't even know it!