Poop is the bits of food left over. Your body cannot use them. Pee is waste and extra water. Your body does not need it.

Food goes in at your mouth. Spit makes it easy to swallow. It goes on a long trip.

At the end, the large intestine takes water out of what is left. It turns into a solid lump.

Your liver makes bile. Bile gives poop its brown color.

You have two kidneys. They sit on each side of your back. They clean your blood. They take out waste and extra water. That makes pee.

Your bladder is like a balloon. It gets bigger as it fills. When it is full, it sends your brain a message.

Pale yellow pee often means you have plenty of water. Dark yellow pee has less water in it. You may need a drink.

Your body makes both on its own. But you get to choose when to go to the bathroom.

Whale poop floats. A net can pick it up from the sea.

Wombats are the only animals known to make poop shaped like cubes. That is true as of November 2026.

Words to know

• kidneys: blood cleaners
• bile: liver juice