Tetrapods
Tetrapods are a diverse group of vertebrate animals characterized by possessing four limbs, with fingers or toes, and a backbone. This group includes mammals, birds, reptiles, and amphibians, all of which have adapted to life on land. Tetrapods typically have lungs for breathing air, and many species are capable of regulating their body temperature internally. They display a wide range of sizes, shapes, and behaviors, making them some of the most successful and varied animals on Earth.