Amphibians are cold blooded, breathe air through their skin and do not have hair or scales. Amphibians go through a metamorphosis; starting from an egg, morphing into larvae that is typically aquatic, breathing by gills, and growing into semi-terrestrial adults that breathe by lungs and through moist skin.


Water-dwelling members of the family Salamandridae, newts are some of the most fascinating types of amphibians. Their name is derived from variations of the Old English word efte, evolving to newt (to refer to the adult animal) during the time of Shakespeare. These unique salamanders can be found in water-rich regions throughout Europe, Southeast Asia, Japan, and both east and west of the Rocky Mountain range in North America. Some species live out their entire life cycle in the water, while others dwell on land as adults, returning to water in order to breed. Depending on the species of newt, they can have a lifespan that ranges from 2 to 15 years of age.


A toad is an amphibian of the order Anura (frogs) which are categorized by leathery, dry skin, snout-like parotoid glands and short legs. Their back legs are intended for meandering and short hops, and they have no teeth. A popular distinction is often made between frogs and toads on the basis of their appearance, but this has no taxonomic basis. From a taxonomic perspective, all members of the order Anura are frogs, but only members of the family Bufonidae are considered "true toads". The use of the term "frog" in common names usually refers to species that are aquatic or semi-aquatic with smooth and/or moist skins, and the term "toad" generally refers to species that tend to be terrestrial.


The salamander is an amphibian animal that has four legs, a slender and long body and a long tail. A salamander's rear legs develop more gradually than its front legs. (Toads and frogs are the opposite: their rear legs develop more rapidly than their front legs.) The four legs on a salamander are short to the point that its belly drags on ground. In spite of their lizard-like nature, salamanders are closely related to the smaller amphibians called newts. Salamanders are found everywhere throughout the world, mostly in more temperate areas. One-third of the known salamander species are found in North America. 


Spring rains and warmer temperatures bring out the spotted salamander. These amphibians are purple, with yellow spots, and grow up to 8 inches long. The spotted salamander is normally secretive, living beneath rocks or under logs. They spend only two weeks or so above ground every year, feeding at night on worms, slugs, spiders and millipedes. They can secrete a noxious milky toxin from glands in their backs and tails to discourage would-be predators.


On rainy nights, in late March or early April, if you’re lucky enough to be in the right place, at the right time, you will hear the almost eerie sound of the spring peepers. These tiny treefrogs and the equally vocal wood frogs sing at night, in the rain, when temperatures are above 40 degrees. Spring Peepers, also called Chorus Frogs, are amphibians (animals that live part of their lives in water and part on land). Though they rarely climb a tree above the level of your knee, these little gems are a type of treefrog.


Frogs are amphibians characterized by a short body, webbed digits (fingers or toes), protruding eyes and the absence of a tail. Frogs are widely known as exceptional jumpers, and many of the anatomical characteristics of frogs, particularly their long, powerful legs, are adaptations to improve jumping performance. Due to their permeable skin, frogs are often semi-aquatic or inhabit humid areas, but move easily on land. They typically lay their eggs in puddles, ponds or lakes, and their larvae, called tadpoles, have gills and develop in water. Adult frogs follow a carnivorous diet, mostly of arthropods, annelids and gastropods. Frogs are most noticeable by their call.


A tree frog is any frog that spends a major portion of its lifespan in trees, known as an arboreal state. These frogs are typically found in very tall trees or other high-growing vegetation. They do not normally descend to the ground, except to mate and spawn, though some build foam nests on leaves and rarely leave the trees at all as adults. Many tree frogs can change their color for better camouflage. Tree frogs are usually tiny, as their weight has to be carried by the branches and twigs of their habitat. Typical for tree frogs are the well-developed discs at the finger and toe tips.