Snakes breathe through their lungs.
While snakes possess a trachea (or windpipe) as part of their respiratory system, it is the lungs that function as the primary organ for gas exchange, enabling them to breathe. The trachea is essentially a tube that carries air to the lungs.
Some snakes have one functional lung (typically the right lung), while others possess two. In species with only one lung, the other lung is either vestigial (reduced and non-functional) or completely absent. The functional lung can be quite long, extending a significant portion of the snake's body length. This adaptation is particularly useful for snakes that need to maintain breathing while constricting prey.
