A snarling dog approaches a hissing cat .
It is highly unlikely that a dog and a cat are hissing and snarling at each other .
It is almost certain that a dog and a cat are hissing and snarling at each other .
It is highly unlikely that a dog and a cat are hissing and snarling at each other .
A dog and a cat are hissing and snarling at each other .