It reminds me too of the sign in the garage that my husband put up to remind him to check under the car for dogs - one of them used to regularly lie underneath as it was usually the coolest place he could find.
lol, we had a cat stow away in the back of our van once, had to catch it a go all the way back to the house it had been in there for hours poor little ******, owners didnt even notice it missing so hadnt paid the ransom