Animals are awesome, but they can also be gross, weird jerks with zero respect for other people's property. What has your pet eaten that it truly should not have?
We had a family cat once that found and ate a condom. I learned this because it puked and in the puke there was a condom.
One of my BFF's family dogs ate up nearly all of a 50th birthday cake.
EDIT: The comments on this are amazing. Your animals are all amazing. And jerks. They are all amazing jerks.