Frog
. Frog (animal), small, tailless animal with a squat body and long, powerful hind legs adapted for jumping. Frogs have large, bulging eyes and moist skin. They typically live on land but spend part of their time in the water. Most frogs develop from small, fishlike larvae called tadpoles or pollywogs that live in water. This life divided between water and land is typical of amphibians , a group of related animals that includes toads, newts, and salamanders as well as frogs. Frog Life Cycle Most frogs have a life cycle with two distinct stages, typically living in water as young and on land as adults. Adult frogs lay large numbers of eggs in water or other moist places (A). The eggs hatch into small, fishlike larvae called tadpoles (B), which grow larger as they feed on algae and bits of plant material in the water (C). As it begins metamorphosis, or change into the adult body form, the tadpole grows hind limbs (D). After both pairs of limbs are complete and the animal has exchanged it...