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The American bullfrog (Lithobates catesbeianus), often simply known as the bullfrog in Canada and the United States, is a large true frog native to eastern North America. It typically inhabits large permanent water bodies such as swamps , ponds , and lakes .
Male Dendropsophus microcephalus calling. Sexual selection in amphibians involves sexual selection processes in amphibians, including frogs, salamanders and newts.Prolonged breeders, the majority of frog species, have breeding seasons at regular intervals where male-male competition occurs with males arriving at the waters edge first in large number and producing a wide range of vocalizations ...
Frogs and toads produce a rich variety of sounds, calls, and songs during their courtship and mating rituals. The callers, usually males, make stereotyped sounds in order to advertise their location, their mating readiness and their willingness to defend their territory; listeners respond to the calls by return calling, by approach, and by going silent.
Climate change and the arrival of the invasive American bullfrog from the East side of the country have decimated their populations, said Marc Heinzman, a conservation manager at Northwest Trek.
The call or croak of a frog is unique to its species. Frogs create this sound by passing air through the larynx in the throat. In most calling frogs, the sound is amplified by one or more vocal sacs, membranes of skin under the throat or on the corner of the mouth, that distend during the amplification of the call.
The African bullfrog is a voracious carnivore, eating insects and other invertebrates, small rodents, reptiles, small birds, fish, and other amphibians that can fit in their mouths. [ 5 ] [ 9 ] [ 10 ] It is also a cannibalistic species—the male African bullfrog is known for occasionally eating the tadpoles he guards, [ 11 ] and juveniles also ...
Adult crawfish frogs grow to "the size of a fist" and have a distinguishing spot pattern and loud croak. One state nature website describes their call as "a deep, loud, snoring 'gwwaaa' which can ...
Males frequently have spotted chests, and at about a year old the males develop spots on their "pads" or "fingers". Males will also sometimes have subtle pads on their front legs during mating season, as well as making a sound similar to a cicada to call to their mates. The female frog is also generally larger than the male frog.