I have read about this many times, people find plastic in pet food, and in hundreds of years it never happened to me, until today.
It was always a bit of the tag from the cow's ear when I read about it, but this was the chicken stew which is chicken rather than a mix of stuff.
A first time for everything and a good thing I mash it up for her, she is such a dustbin she would have swallowed it otherwise.
Forgot to get a photo.