Quadrupeds are animals that walk on four limbs. This group includes a variety of species, such as dogs, cats, horses, and cows. Their body structure is adapted for stability and speed, allowing them to move efficiently across different terrains. Quadrupeds can be found in many habitats, from forests to grasslands. Most quadrupeds have a similar skeletal structure, featuring a backbone, four legs, and a skull. They are often classified into two main categories: herbivores, which primarily eat plants, and carnivores, which mainly consume meat. This classification helps in understanding their roles in ecosystems.