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Polycephaly is the condition of having more than one head. The term is derived from the Greek stems poly (Greek: "πολύ") meaning "many" and kephalē (Greek: "κεφαλή") meaning "head". [1] A polycephalic organism may be thought of as one being with a supernumerary body part, or as two or more beings with a shared body.
Most female frogs had around 40 ripe eggs, almost double that of the number of juveniles ever found in the stomach (21–26). This means one of two things, that the female fails to swallow all the eggs or the first few eggs to be swallowed are digested.
Bullfrog stomachs have been found to contain rodents, small lizards and snakes, other frogs and toads, other amphibians, crayfish, other crustaceans, [47] small birds, scorpions, tarantulas and bats, [48] [49] as well as the many types of invertebrates, such as snails, worms and insects, which are the usual food of ranid frogs. [50]
Edible frog (Pelophylax kl. esculentus) 26 Edible frog is the fertile hybrid of the pool frog and the marsh frog. [49] [50] 56 Axolotl (Ambystoma mexicanum) 28 [51] 57 Bed bug (Cimex lectularius) 29–47: 26 autosomes and varying number of the sex chromosomes from three (X 1 X 2 Y) to 21 (X 1 X 2 Y+18 extra Xs). [52] [52] 58 Pill millipede ...
Many predators of frogs have become adapted to tolerate high levels of these poisons, but other creatures, including humans who handle the frogs, may be severely affected. [193] Some frogs use bluff or deception.
The genus is unique because it contains the only two known frog species that incubated the prejuvenile stages of their offspring in the stomach of the mother. The combined ranges of the gastric-brooding frogs comprised less than 2,000 square kilometres (770 sq mi).
The African bullfrog males call out during the rainy season. The call lasts about a second and can be described as a low-pitched whoop. [16] Males have two breeding strategies, depending on their age. Young males congregate in a small area, perhaps only 1–2 m 2 (11–22 sq ft) of shallow water.
The clawed frog have been kept as pets and research subjects since as early as the 1950s. They are extremely hardy and long lived, having been known to live up to 20 or even 30 years in captivity. [47] African clawed frogs are frequently mislabeled as African dwarf frogs in pet stores. Identifiable differences are: Dwarf frogs have four webbed ...