2. A sea star’s feet are on the underside of its arms
3. An octopus uses its arms to grab prey and to jet through the water.
4. Lobsters, crabs, and scorpions fight off enemies and grab prey with clawlike pincers on their front limbs. Are those limbs arms or legs? It depends on who you ask.
5. Most dinosaurs walked on four legs, but not T. rex. It had two tiny arms with sharp claws. How did the massive meat eater use its little limbs? Nobody knows. They were strong enough to hold prey but too short to reach T. rex’s mouth.
Looking for more Gross and Goofy Body facts? Check out my book Give Me a Hand: The Secrets of Hands, Feet, Arms, and Legs. It’s full of weird, wacky, strange, and surprising information about your body and the bodies of other animals.