1. Four-Legged Friends: The word "quadruped" (pronounced kwod-ruh-ped) comes from Latin words meaning "four" (quad) and "foot" (ped). So, any animal that walks on four legs is officially a quadruped!

2. A Massive Club of Animals. Almost all land-dwelling mammals (like dogs, cats, horses, and elephants) and reptiles (like crocodiles, lizards, and turtles) are quadrupeds. Even amphibians like frogs and salamanders count!

3. Not Just for Walking. While quadrupeds use all four legs to get around on land, many use them for other amazing skills too. Cheetahs use their four legs to sprint at incredible speeds, while squirrels use them to leap high up into trees.

4. Changing How They Move. Some quadrupeds can switch up how they use their legs depending on how fast they want to go. For example, horses can walk, trot, canter, or gallop by changing the rhythm and order in which their four hooves hit the ground.

5. Swimming Quadrupeds. Many four-legged animals—like dogs, bears, and tigers—are natural swimmers. When they swim, they usually keep the same four-leg walking motion going underwater, just like they are walking on the floor of a pool!

6. Even Dinosaurs Were Quadrupeds. Some of the largest animals to ever walk the Earth—like the giant plant-eating sauropods (such as the Brachiosaurus)—were massive quadrupeds that needed all four sturdy, tree-trunk-like legs just to support their huge weight.

7. Not every animal with four limbs is a quadruped! Animals that mostly use their front limbs like arms or wings (like humans, birds, and bats) use only two legs for walking, so they are classified as bipeds.