I hate when we get a package that has peanuts in them, they are messy and go everywhere.
The biodegradable packing peanuts are Non-Toxic , actually eatable, and should not pose danger to you or you dog if ingested in small numbers.
However, the peanuts made from polystyrene foam are poisonous and dogs can't tell the differences between them.
Still safe to make them vomit if you don't know how much they ate.