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By inflating its body and bending its head down, the bullfrog can appear larger than its actual size. [24] It also secretes a noxious white substance through its skin that is distasteful, though non-toxic, to predators. [42] [43] The secretion contains a trypsin inhibitor and can induce hemolysis (rupturing of red blood cells). [15] [42]
In captivity, C. cranwelli and C. ornata are the most popular species, [4] along with the "fantasy frog", a captive-produced hybrid between C. cranwelli and C. cornuta.These frogs can live in a terrarium with a floor area 8-10 times the size of the frog. [4]
Adult frogs live in fresh water and on dry land; some species are adapted for living underground or in trees. Frogs typically lay their eggs in the water. The eggs hatch into aquatic larvae called tadpoles that have tails and internal gills. They have highly specialised rasping mouth parts suitable for herbivorous, omnivorous or planktivorous ...
Pig frogs are opportunistic feeders and will eat a wide variety of prey, including insects, worms, and small vertebrates. Their primary diet is crawfish, but like most bullfrogs, they will consume almost anything they can swallow, including insects, fish, and other frogs. They are known to feed on beetles, dragonflies, crayfish, and other ...
Male northern cricket frogs were collected at the peak of the breeding season and injected with sheep blood cells to elicit an immune response. Researchers found that spermatic cyst diameter, germinal epithelium depth, and gonadosomatic index were smaller in the injected males compared to males injected with saline (control) as well as their ...
Abscisic acid is an important hormone in helping plants to conserve water—it causes stomata to close and stimulates root growth so that more water can be absorbed. Plants share with animals the problems of obtaining water but, unlike in animals, the loss of water in plants is crucial to create a driving force to move nutrients from the soil ...
Moor frogs are renowned for their ability to tolerate freezing temperatures because most frog species live in hot and humid tropical environments. Many frogs that do live in cold climates will attempt to overwinter in bodies of water because ambient temperatures are moderated by water. In these cases, temperatures only reach a few degrees below ...
By burrowing, the stresses of temperature and water loss on the frogs are minimised. [11] Their burrows are usually in clay soils near roots of vegetation [11] and can be up to 1 metre deep. [9] During aestivation water holding frogs shed several layers of their skin and secrete a water-tight mucus cocoon that is used to line their burrow in ...