The Order Caudata (also called Urodela) includes salamanders and newts—amphibians characterized by elongated bodies, tails, and usually four limbs of roughly equal size. Most species live in moist environments and have permeable skin for respiration, often alongside lungs or gills. Caudates exhibit diverse reproductive strategies, including aquatic or terrestrial egg-laying, and many can regenerate lost limbs. They play important roles in ecosystems as both predators of invertebrates and prey for larger animals.