20 bellies that need to be scratched immediately

It's nice, you know, to scratch the belly of some animal, but in fact there is something more behind it — the beast that substitutes its belly for you, thus demonstrates trust and willingness to submit. Dogs open their bellies when they trust you or show obedience — in this case, you should treat the animal kindly, but respectfully. Cats also show their belly as a defensive signal — be ready for an attack.