Amphibians beginning with J

Jabiru toadlet - The Jabiru Toadlet is a species of frog in the Myobatrachidae family. It is endemic to Australia. Its natural habitats are subtropical or tropical dry lowland grassland and intermittent rivers.

Jamaican Laughing Frog - The Jamaican Laughing Frog is a species of frog in the Hylidae family. It is endemic to Jamaica. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical moist montanes, rural gardens, and heavily degraded former forest. It is threatened by habitat loss.

Jamaican snoring frog - The Jamaican Snoring Frog is a species of frog in the Hylidae family. It is endemic to Jamaica. Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist montanes. It is threatened by habitat loss.

Japanese Black Salamander - The Japanese Black Salamander is a species of salamander in the Hynobiidae family. It is endemic to Japan. Its natural habitats are temperate forests, temperate grassland, swamps, freshwater marshes, intermittent freshwater marches, irrigated land, and canals and ditches.

Japanese Brown Frog - Its natural habitats are temperate grassland, rivers, swamps, irrigated land, and seasonally flooded agricultural land.

Japanese Clawed Salamander - The Japanese Clawed Salamander is a species of salamander in the Hynobiidae family. It is endemic to Japan. Its natural habitats are temperate forests and rivers.

Japanese Common Toad - The Japanese Common Toad or Japanese Toad is a species of toad in the Bufonidae family. It is endemic to Japan. Its natural habitats are subarctic forests, temperate forests, temperate shrubland, swamps, freshwater marshes, intermittent freshwater marches, freshwater springs, arable land, rural gardens, urban areas, ponds, and irrigated land. It is threatened by habitat loss.

Japanese Fire-bellied Newt - This newt is usually 3.5 - 5.5 inches Males can be distinguished from females by their swollen cloacas, and male newts of this species will often form a blue iridescent sheen and smoother skin during the breeding season.

Japanese giant salamander - The Japanese giant salamander is endemic to Japan, where it is known as Ōsanshōuo , literally meaning "Giant Japanese pepper fish". With a length of up to almost 1.5 meters , it is the second largest salamander in the world, only being surpassed by the very similar and closely related Chinese giant salamander .

Japanese Stream Toad - The Japanese Stream Toad is a species of toad in the Bufonidae family. It is endemic to Japan. Its natural habitats are temperate forests and rivers. It is threatened by habitat loss.

Japanese Tree Frog - The journalist Toyohiro Akiyama carried some Japanese tree frogs with him during his trip to the Mir space station in December 1990.

Japanese Wrinkled Frog - The Japanese wrinkled frog, Glandirana rugosa, , is a species of true frog native to Japan and introduced to Hawaii in the late 19th century. It has sometimes been regarded as a single species with the Imienpo Station frog, Glandirana emeljanovi, which is found on the East Asian mainland. The two species are distinguished from others by their rough and uneven skin. It lives and breeds in various freshwater environments, including ponds, streams and wetlands. The IUCN does not consider this species to be faced by any significant threats.

Java Flying Frog - Its natural habitats are subtropical or tropical moist montanes and rivers. It is threatened by habitat loss.

Javan Chorus Frog - Small frog, snout-to-vent length is about 2 cm or little more. Yellowish brown at dorsal side, with symmetric—arrow shaped—mark and sometimes a narrow light vertebral line.

Javan Torrent Frog - The Javan Torrent Frog is a species of frog in the Ranidae family. It is endemic to Indonesia.

Javelin Frog - The Javelin Frog is a species of frog in the Hylidae family. It is endemic to Australia. Its natural habitats are subtropical or tropical dry lowland grassland, swamps, and intermittent freshwater marshes.

Jeet Sukumaran’s Torrent-Dwelling Toad - Ansonia jeetsukumarani is a montane dwelling frog usually found on rocks and leaves approximately 0.5–1.5 m above the ground near small streams

Jefferson's salamander - It is typically dark gray, brown, or black on its dorsal surface, but a lighter shade on its anterior. Some individuals may also have silver or blue specks on their sides; the area around the vent is usually gray. These salamanders are slender, with a wide nose and distinctive long toes, and range in size from 11 to 18 cm.

Jemez mountains salamander - Its natural habitat is temperate forests. It is threatened by habitat loss.

Jingdong Horned Toad - The Jingdong Horned Toad is a species of amphibian in the Megophryidae family. It is found in China and Vietnam. Its natural habitats are subtropical or tropical moist montanes and rivers. It is threatened by habitat loss.

Jinxiu Bubble-nest Frog, Jinxiu Small Treefrog - Philautus jinxiuensis is a species of frog in the Rhacophoridae family. It is found in China and Vietnam. Its natural habitats are subtropical or tropical moist montanes, freshwater marshes, and intermittent freshwater marches. It is threatened by habitat loss.

Junaluska salamander - Its natural habitats are rivers and intermittent rivers. It is threatened by habitat loss.