DO NOT TRY THIS AT HOME>>>>>
I DID THIS AS A CHILD AND I FEEL BAD FOR IT ....
I know if you cover bread pieces in Baking soda and give them to seagulls the seagulls will explode ....
It works with alkaseltzer (ok i have no idea how to spell that word) too.

Disclaimer: It was just a discussion in science class, I would never do something like that to a living animal.