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An adult weighs 1.5 to 2.5 kg (3.3 to 5.5 lb), making them the fifth heaviest living amphibian in the world after their South China, Chinese and Japanese cousins and the goliath frog, while the largest cane toads may also weigh as much as a hellbender. Hellbenders reach sexual maturity at about five years of age, and may live 30 years in captivity.
This is a list of maximum recorded animal lifespans in captivity. Only animals from the classes of the Chordata phylum are included. [ 1 ] On average, captive animals (especially mammals ) live longer than wild animals.
Tylototriton shanjing, the emperor newt, Mandarin newt or Mandarin salamander, is a highly toxic newt native to Yunnan and parts of South China. It is sometimes seen in private collections, and is sometimes available for sale at certain reptile and amphibian-specializing pet stores and occasionally through captive breeders .
The Japanese giant salamander (Andrias japonicus) reaches up to 1.44 m (4.7 ft) in length, feeds at night on fish and crustaceans, and has been known to live for more than 50 years in captivity. [ 2 ]
The axolotl (/ ˈ æ k s ə l ɒ t əl / ⓘ; from Classical Nahuatl: āxōlōtl [aːˈʃoːloːtɬ] ⓘ) (Ambystoma mexicanum) [3] is a paedomorphic salamander closely related to the tiger salamander. [3] [4] [5] It is unusual among amphibians in that it reaches adulthood without undergoing metamorphosis.
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The barred tiger salamander typically grows from 7.6 to 16.5 cm (3.0 to 6.5 in), but neotenic forms can grow to lengths of 17.8 to 38.1 cm (7.0 to 15.0 in), [3] and is one of the largest species of salamander in North America. It has a broad head and a sturdy body.
Tiger salamander (Ambystoma tigrinum) Ambystoma tigrinum Biofluorescence in Ambystoma tigrinum. These salamanders usually grow to a length of 6–8 in (15–20 cm) with a lifespan of around 12–15 years. [5] They are characterized by having markings varying in color on the back of their head, body, and tail. [6]