Mother's defense of her child against the snake|دفاع مادر از چوچه اش در مقابل مار

Dogs are mammals, snakes are reptiles.

Dogs have legs, snakes (usually) do not.

Snakes have more vertebrae than dogs.

Snakes can (usually) dislocate their jaws, dogs can’t.

Some snake species are venomous, but dogs aren’t.