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The African clawed frog or platanna, Xenopus laevis, was first widely used in laboratories in pregnancy assays in the first half of the 20th century. When human chorionic gonadotropin , a hormone found in substantial quantities in the urine of pregnant women, is injected into a female X. laevis , it induces them to lay eggs .
The African clawed frog (Xenopus laevis), also known as simply xenopus, African clawed toad, African claw-toed frog or the platanna) is a species of African aquatic frog of the family Pipidae. Its name is derived from the short black claws on its feet. The word Xenopus means 'strange foot' and laevis means 'smooth'.
Cruziohyla craspedopus is a high-canopy frog of primary tropical lowland rainforest at elevations of 50–600 m (160–1,970 ft) above sea level. It only descends to lower branches for breeding, which takes place in fallen trees holding small water pools. However, tadpoles have also been found in small pools on the ground.
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.
Malpighi's frog dissection in 1661, proved to be a suitable size that could be magnified to display the capillary network not seen in the larger animals. [16] In discovering and observing the capillaries in the frog's lungs, Malpighi studied the movement of the blood in a contained system. [15]
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The species was described in 2018 by zoologist Andrew Gray, [4] and is named after his granddaughter. It can be distinguished from the closely related C. calcarifer (Splendid Tree Frog) by having small green lichen-like markings on its dorsal surfaces rather than white or pale blue spots and lacking characteristic dark ventral markings found on the under-thighs of C. calcarifer which are ...
Lepidobatrachus laevis, widely known as Budgett's frog, is a species of frog in the family Ceratophryidae, discovered by John Samuel Budgett. [2] It is often kept as a pet . It has acquired a number of popular nicknames, including hippo frog , [ 3 ] Freddy Krueger frog , [ 3 ] and escuerzo de agua .