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The edible frog (Pelophylax kl. esculentus) [1] [2] is a hybrid species of common European frog, also known as the common water frog or green frog (however, this latter term is also used for the North American species Rana clamitans). It is used for food, particularly in France as well as Germany and Italy, for the delicacy frog legs. [3]
Pelophylax is a genus of true frogs widespread in Eurasia, with a few species ranging into northern Africa. This genus was erected by Leopold Fitzinger in 1843 to accommodate the green frogs of the Old World, which he considered distinct from the brown pond frogs of Carl Linnaeus' genus Rana.
The fully aquatic Bornean flat-headed frog (Barbourula kalimantanensis) is the first frog known to lack lungs entirely. [72] Frogs have three-chambered hearts, a feature they share with lizards. Oxygenated blood from the lungs and de-oxygenated blood from the respiring tissues enter the heart through separate atria.
"Fewer than a dozen of the 6455 species of frogs in the world are known to have internal fertilization, and of these, all but the new species either deposit fertilized eggs or give birth to froglets."
The common coquí, widely known as the coquí (Eleutherodactylus coqui), is a species of frog native to Puerto Rico belonging to the family Eleutherodactylidae.The species is named for the loud call the males make at night, which serves two purposes; the "co" serves to repel other males and establish territory while the "quí" serves to attract females. [2]
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Fish are known to eat the eggs of these frogs. African dwarf frogs spend most of their time near the bottom of the water, where they feel safe from predators. Most frogs sleep up to 12 hours a day, provided no threat of predators is present. These frogs are suggested to be kept in a group of two or more due to their social nature.
Pig frogs are vertebrates, meaning they have a backbone, and they are tetrapods, meaning they have four limbs. They are adapted to living both on land and in water, and they are commonly found in the southeastern United States. Norwegian-American naturalist Leonhard Stejneger described the pig frog in 1901, and it still bears its original name ...