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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.
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]
They are not found in the sea with the exception of one or two frogs that live in brackish water in mangrove swamps; [34] the Anderson's salamander meanwhile occurs in brackish or salt water lakes. [35] On land, amphibians are restricted to moist habitats because of the need to keep their skin damp. [31]
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 ...
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 ...
Two burnsi morphs, a green morph, and a brown morph of the northern leopard frog Brown morph northern leopard frog in a wood chip pile in Iowa. The northern leopard frog has several different color variations, with the most common two being the green and the brown morphs, with another morph known as the burnsi morph. Individuals with the burnsi morph coloration lack spots on their backs, but ...
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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.