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The American bullfrog ... Some authorities use the scientific name, ... ram's horn snails, and dytiscid beetles, as well as the aquatic eggs of fish, frogs ...
The dwarf American toad (A. a. charlesmithi), is a smaller version of the American toad, which reaches lengths of about 6 cm (2 + 1 ⁄ 4 in), is generally a dark reddish color ranging to light red in some specimens in isolated populations. The spots on the back are reduced or absent, and when present they contain a few small red warts and a ...
The cane toad (Rhinella marina) has been known to survive 24 years in captivity, and the American bullfrog (Rana catesbeiana) 14 years. [171] Frogs from temperate climates hibernate during the winter, and four species are known to be able to withstand freezing during this time, including the wood frog (Rana sylvatica). [172]
Bullfrog is a common English language term to refer to large, aggressive frogs, regardless of species. ... American bullfrog (Lithobates catesbeianus), ...
Many frogs in this genus breed in early spring, although subtropical and tropical species may breed throughout the year. Males of most of the species are known to call, but a few species are thought to be voiceless. Females lay eggs in rafts or large, globular clusters, and can produce up to 20,000 at one time.
The arrival of the American bullfrog has been harmful to many native species, but Heinzman said that the northern leopard frog's populations are alarmingly low, with only one site in the State ...
"Fewer than a dozen of the 6455 species of frogs in the world are known to have internal fertilization, and of these, all but the new species either deposit fertilized eggs or give birth to froglets."
The western toad (Anaxyrus boreas) is a large toad species, between 5.6 and 13 cm (2.2 and 5.1 in) long, native to western North America. [1] [3] [4] A. boreas is frequently encountered during the wet season on roads, or near water at other times.