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  2. Opisthonephros - Wikipedia

    en.wikipedia.org/wiki/Opisthonephros

    The kidney of the frog is an opisthonephros. The kidneys are seen as two elongated, red organs in this image. The opisthonephros is the functional adult kidney in lampreys (cyclostomes), most fishes, and amphibians. [1] It is formed from the extended mesonephros along with tubules from the posterior nephric ridge. [2]

  3. Vocal sac - Wikipedia

    en.wikipedia.org/wiki/Vocal_sac

    The vocal sac is the flexible membrane of skin possessed by most male frogs and toads. The purpose of the vocal sac is usually as an amplification of their mating or advertisement call. The presence or development of the vocal sac is one way of externally determining the sex of a frog or toad in many species; taking frogs as an example;

  4. Xenopus - Wikipedia

    en.wikipedia.org/wiki/Xenopus

    The frog's skin is smooth, but with a lateral line sensory organ that has a stitch-like appearance. The frogs are all excellent swimmers and have powerful, fully webbed toes, though the fingers lack webbing. Three of the toes on each foot have conspicuous black claws. The frog's eyes are on top of the head, looking upwards. The pupils are circular.

  5. You can see organs through the skin of this funky frog - AOL

    www.aol.com/news/2016-08-09-you-can-see-organs...

    The frog's skin is green on top, but the skin on the glass frog's stomach is just as translucent as its name suggests. You can even see its organs through the skin, especially its heart, liver ...

  6. Cement glands - Wikipedia

    en.wikipedia.org/wiki/Cement_glands

    Diagram of a male P. lauroi showing the anterior and posterior testes, and eight cement glands in a clustered arrangement. Cement glands are small organs found in Acanthocephala that are used to temporarily close the posterior end of the female after copulation.

  7. 50 Cute And Funny Photos That May Show You A Different Side ...

    www.aol.com/80-pictures-frogs-may-help-010054673...

    The world's largest frog is the goliath frog of West Africa—it can grow to 15 inches (38 centimeters) and weigh up to 7 pounds (3.2 kilograms). One of the smallest is the Cuban tree toad, which ...

  8. Frog - Wikipedia

    en.wikipedia.org/wiki/Frog

    Some frogs such as the wood frog, moor frog, or spring peeper can even survive being frozen. Ice crystals form under the skin and in the body cavity but the essential organs are protected from freezing by a high concentration of glucose.

  9. Rana (genus) - Wikipedia

    en.wikipedia.org/wiki/Rana_(genus)

    Rana (derived from Latin rana, meaning 'frog') is a genus of frogs commonly known as the Holarctic true frogs, pond frogs or brown frogs. Members of this genus are found through much of Eurasia and western North America .