Being BOTH a dog AND a bowl owner living sort-of near Santa Rosa, I feel eminently qualified to comment on this thread: It doesn't require a sophisticated engineered design: one afternoon a cheap silvered car sunscreen managed to raise a mysterious 3 by 1 by 1/2-inch high blister in the plastic covering an interior structural column in my sedan. As a conversation starter I would ask passengers if they thought the blister might possibly be due to some kind of scary new "killer bee" sting?? Although alas they failed to prevent the blistering, the screen WAS printed with many earnestly helpful legally-motivated safety tips, including the memorable advice: "Caution: Do not operate vehicle with sunscreen in place!" "Cave canem afferentem phialam!"