This reminds me of signs I saw when in Tokyo in the outdoor section of a cafe. They said what translates to "Watch out for crows, they will steal your food!" I cracked up at the time (and still find it funny), but apparently this is a real thing, Japan's city-crows are notoriously crafty even amongst crows; they're known to crack nuts using crosswalks and cars, placing nuts where cars are most likely to run over them waiting for the lights to change to safely place/retrieve the nuts.
