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Midwife toad
genus Alytes
The males carry a string of fertilised eggs on their back, hence the name "midwife"
The back of the midwife toad is covered with small warts. These warts give off a strong smelling poison when the toad is attacked
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Natterjack toad
Bufo calamita
Distinguished from common toads by a yellow line down the middle of the back, and parallel paratoid glands
Natterjacks have a very loud and distinctive mating call
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Cane toad
Rhinella marina
Introduced to many regions of the Pacific and the Caribbean islands as a method of agricultural pest control. The species derives its common name from its use against the cane beetle. The cane toad is now considered a pest and an invasive species
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Goliath frog
Conraua goliath
Largest living frog on Earth. Specimens can grow up to 32 cm (12.6 in) in length. Found in Cameroon and Equatorial Guinea
The one in the picture has stolen a watch!
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American bullfrog
Rana catesbeiana
Has an olive green back and sides. Males have yellow throats
Native to southern and eastern parts of the United States and Canada
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Paradoxical frog
Pseudis paradoxa
Its name refers to the very large – up to 25 cm (10 in) long – tadpole, which in turn becomes an ordinary-sized frog, only about a quarter of its former length
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Xenopus
genus Xenopus
Commonly known as the clawed frog
Studied as model organisms for developmental biology, cell biology, toxicology, neuroscience and for modelling human disease and birth defects
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Chinese giant salamander
Andrias davidianus
The largest salamander and largest amphibian in the world, reaching a length of 180 cm (5.9 ft)
A living fossil which is classified as critically endangered
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Hellbender
Cryptobranchus alleganiensis
A species of giant salamander endemic to eastern North America
It is blotchy brown or red-brown in colour, with a paler underbelly
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Axolotl
Ambystoma mexicanum
Also known as a Mexican salamander and colloquially known as a "walking fish"
Axolotls reach adulthood without undergoing metamorphosis. Instead of developing lungs and taking to land, the adults remain aquatic and gilled
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Great crested newt
Triturus cristatus
Also known as northern crested newt
Males can be distinguished from females by the presence of a jagged crest during the breeding season
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