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Similar to other northern frogs that enter dormancy close to the surface in soil and/or leaf litter, wood frogs can tolerate the freezing of their blood and other tissues. [ 17 ] [ 18 ] Urea is accumulated in tissues in preparation for overwintering , [ citation needed ] and liver glycogen is converted in large quantities to glucose in response ...
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]
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 ...
Of all frogs, it has the lowest relative red blood cell volume, but the highest count (i.e., many but small red blood cells) and with a high oxygen capacity. The frog mainly stays near the bottom and it has never been observed to surface in the wild, but captive studies indicate that it may surface to breathe using its diminutive lungs if the ...
Water-holding frogs are ectothermic, [8] meaning they depend on external sources of body heat. Aestivation is a behaviour characteristic of water holding frogs. It is similar to how other animals hibernate, except it takes place during summer as opposed to winter when weather conditions are hot and dry. This behaviour is a response to high ...
Although these frogs can swallow animals almost half their size, they sometimes attempt to eat things larger than they are. Their teeth, as well as bony projections in the front of the jaw, can make it difficult for them to release prey after taking it in their mouth, in some cases leading to death by choking.
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Batrachology is the branch of zoology concerned with the study of amphibians including frogs, salamanders, and caecilians. It is a sub-discipline of herpetology, [1] which also includes non-avian reptiles (snakes, lizards, turtles, crocodilians, and the tuatara). Batrachologists may study the evolution, ecology, ethology, or anatomy of amphibians.