Amphibians
American bullfrog
Lithobates catesbeianus
The American bullfrog is North America's largest true frog, up to 20 cm long and 500 g. Its size, deep call, diet, tadpoles, range and spread as an invasive.
Animal group · 15 species
Amphibians
Animals that usually start life in water and later live on land, with moist skin: frogs, toads, salamanders and newts.
Species profiles
Amphibians
American toad
Anaxyrus americanus
The American toad is the common warty toad of eastern North America: its size, colors, long musical trill, garden and woodland habitat, breeding and lifespan.
Amphibians
Axolotl
Ambystoma mexicanum
The axolotl is a Mexican salamander that keeps its gills and lives in water for life. Facts on its size, colors, diet, regeneration and endangered status.
Amphibians
Cane toad
Rhinella marina
The cane toad is a huge, toxic toad native to the Americas that became a notorious invader in Australia, Florida and Pacific islands. Size, toxins, life cycle.
Amphibians
Chinese giant salamander
Andrias davidianus
The Chinese giant salamander is one of the largest amphibians on Earth, up to 1.8 m long. Its mountain streams, diet, crying calls, farming and Critical status.
Amphibians
Common frog
Rana temporaria
The common frog is Europe's most widespread frog, from Ireland to the Urals and beyond the Arctic Circle. Its colors, spawn, tadpoles, diet and winter habits.
Amphibians
Common toad
Bufo bufo
The common toad is Europe's familiar warty brown toad, up to 12 cm long. Its copper eyes, skin toxins, night hunting, spring migrations, spawn and lifespan.
Amphibians
Fire salamander
Salamandra salamandra
The fire salamander is Europe's black-and-yellow salamander of damp forests: toxic skin, live-born larvae and a long life, now Vulnerable due to Bsal fungus.
Amphibians
Golden poison frog
Phyllobates terribilis
The golden poison frog of Colombia's Pacific rainforest may be the most poisonous animal alive. Its batrachotoxin, diet, color forms, dart use and status.
Amphibians
Great crested newt
Triturus cristatus
The great crested newt is Britain's largest newt, with warty dark skin, an orange belly and a jagged male crest. Its size, ponds, life cycle and legal status.
Amphibians
Hellbender
Cryptobranchus alleganiensis
The hellbender is North America's largest salamander: a flat, wrinkly, fully aquatic amphibian of clean, rocky Appalachian and Ozark streams, now Vulnerable.
Amphibians
Olm
Proteus anguinus
The olm is a blind, pale salamander of flooded caves in Slovenia, Croatia and Bosnia. Facts on its gills, senses, diet, century-long lifespan and conservation.
Amphibians
Red-eyed tree frog
Agalychnis callidryas
The red-eyed tree frog is a small nocturnal frog of Central American rainforests. Its size, colors, startle display, diet, eggs on leaves, lifespan and status.
Amphibians
Strawberry poison dart frog
Oophaga pumilio
The strawberry poison dart frog is a tiny red-and-blue frog of Central American rainforests. Facts on its color morphs, toxins, calls and tadpole care.
Amphibians
Wood frog
Lithobates sylvaticus
The wood frog is a masked brown frog of North American forests that survives winter frozen. Its size, range to Alaska, vernal pool breeding, calls and life.
