The packet contains silica dioxide, which is non-toxic. The only reason the bags make such a big deal about not eating them is to make sure you don't mistake them for food they might be packed with, and because the bag itself is a potential choking hazard.

From what I understand, nothing. There isn't anything harmful about them unless you ingest enough to choke or cause blockages.

You will wake up from the dream. But they don't want you to know the truth.

(/s)

Presumably similar to if you ate a comparable amount of really clean sand. Can't imagine it feels great coming out but otherwise just takes up space as it goes through your body.

See? Because of me, now there’s a warning!

My cat would try and eat the ones that come with beef jerky . Would just seem to make her really thirsty.