Darwin's frog
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Darwin's frog, also called the Southern Darwin's frog, is a species of frog of the family Rhinodermatidae. It was discovered by Charles Darwin during his voyage on HMS Beagle on a trip to Chile. In 18
Ventral view of trunk
Most green individuals are brooding males
Vocal sac
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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 o
Darwin's frog
…for Conservation of Nature. Darwin's frog has an unusual method of brooding, in which the male will facilitate development of its tadpoles inside its vocal sac. This male brooding may make R. darwinii unique among extant frog species, as the only other frog that has this behavior is the R. rufum (northern…
A fully distended vocal sac in an Australian red-eyed tree frog (Litoria chloris)
Italian tree frog (Hyla intermedia) with an inflated vocal sac
Marsh Frog Sac 0
Marsh Frog Sac 1