Tailless amphibians belong to the order Anura (Greek: 'without tail'), which includes frogs and toads. Anurans are characterised by long hind limbs for jumping, no tail in adults, and a unique life cycle (aquatic tadpole → terrestrial adult). Gymnophiona = caecilians (limbless, burrowing); Caudata (Urodela) = salamanders and newts (with tails); Squamata = reptiles (lizards and snakes).