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Frog photos from the San Francisco Exploratorium:
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Leopard Frog (Rana pipiens)
This is a typical jumping frog, with powerful back legs. It's native to the NE and N-Central US. |
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African Clawed Frog (Xenopus laevis)
This frog has big webbed hind feet, and is a good swimmer. Though it lacks the vocal sack present in most frogs & toads, its call can be loud enough to be heard
outside of the water. African clawed frogs were once used for pregnancy tests. The woman's urine was injected into a female Clawed Frog, and if the frog began to lay eggs then the woman was pregnant. |
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Fire-Bellied Toad (Bombina orientalis)
From Korea and north China, this frog has a spotted camouflaged back. When startled, it flips over or bends backward to show its bright belly as a warning -
poisonous! This toad lacks the vocal sack that is present in most other frogs & toads, so its call is very weak and can only be heard over very short distances. |
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Smoky Jungle Frog (Leptodactylus
pentadactylus) From the Amazon Basin in South America, this big frog is 5"-6" long. It spends most of its time in the jungle, away from ponds and streams. To keep
her eggs moist, the female oozes a liquid from her body, beats it into a frothy foam with her back feet, and deposits her eggs in the foam. The outside of the foam hardens into a shell that protects the eggs
and keeps them moist. |
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Western Spadefoot Toad (Scaphiopus
hammondii) Native to California, the Spadefoot toad buries itself in the ground during most of the day. It waits for a rainstorm to lay its eggs, and the tadpoles
develop into frogs in just two weeks - hopefully before the puddle dries up! |
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Gulf Coast Toad (Bufo valliceps)
This toad is found in Louisiana, Texas, and along the east coast of Mexico. Its tongue is attached at the front of its mouth, and it flips out its tongue to grab
bugs. |
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