there’s a rat and there’s a cat both sitting on the fence (literally on the fence - cats and rats don't take up positions on issues)
and a boy happens to pass by; the rat turns to the cat but says nothing cause rats don’t talk; the cat turns to the rat and eats the rat cause it’s in its nature to do so
the boy walks past with no idea what’s happening cause he’s human (though they talk and eat a lot, humans have no idea what’s happening)