Amphibians are ectothermic, anamniotic, four-limbed vertebrate animals that constitute the class Amphibia. In its broadest sense, it is a paraphyletic group encompassing all tetrapods excluding the amniotes. All extant (living) amphibians belong to the monophyletic subclass Lissamphibia, with three living orders: Anura, Urodela (salamanders), and Gymnophiona (caecilians). Evolved to be mostly semiaquatic, amphibians have adapted to inhabit a wide variety of habitats, with most species living in freshwater, wetland or terrestrial ecosystems. Their life cycle typically starts out as aquatic larvae with gills known as tadpoles, but some species have developed behavioural adaptations to bypass this.
A tetrapod is any four-limbed vertebrate animal of the superclass Tetrapoda. Tetrapods include all extant and extinct amphibians and amniotes, with the latter in turn evolving into two major clades, the sauropsids and synapsids. Hox gene mutations have resulted in some tetrapods becoming limbless or two-limbed. Nevertheless, these limbless groups still qualify as tetrapods through their ancestry, and some retain a pair of vestigial spurs that are remnants of the hindlimbs.
Herpetoculture is the keeping of live reptiles and amphibians in captivity, whether as a hobby or as a commercial breeding operation. "Herps" is an informal term for both reptiles and amphibians, shortened from the scientific umbrella term “herptiles”. It is undertaken by people of all ages and from all walks of life, including career herpetologists, professional reptile or amphibian breeders, and casual hobbyists.
Herpetology is a branch of zoology concerned with the study of amphibians and reptiles. Birds, which are cladistically included within Reptilia, are traditionally excluded here; the separate scientific study of birds is the subject of ornithology.
In biology, a common name of a taxon or organism is a name that is based on the normal language of everyday life; and is often contrasted with the scientific name for the same organism, which is often based in Latin. A common name is sometimes frequently used, but that is not always the case.
Blanding's turtle is a species of semi-aquatic turtle of the family Emydidae. This species is native to central and eastern parts of Canada and the United States. It is considered to be an endangered species throughout much of its range. Blanding's turtle is of interest in longevity research, as it shows few or no common signs of aging and is physically active and capable of reproduction into eight or nine decades of life.
The smooth snake is a species of non-venomous snake in the family Colubridae. The species is found in northern and central Europe, but also as far east as northern Iran. The Reptile Database recognizes two subspecies as being valid, including the nominotypical subspecies described here.
Pseudemys is a genus of large, herbivorous, freshwater turtles of the eastern United States and adjacent northeast Mexico. They are often referred to as cooters, which stems from kuta, the word for turtle in the Bambara and Malinké languages, brought to America by enslaved people from Africa.
Axel Johann Einar Lönnberg was a Swedish zoologist and conservationist. Lönnberg was born in Stockholm. He was head of the Vertebrate Department of the Naturhistoriska Riksmuseet from 1904 to 1933.
Karl Patterson Schmidt was an American herpetologist.
Hobart Muir Smith, born Frederick William Stouffer, was an American herpetologist. He is credited with describing more than 100 new species of American reptiles and amphibians. In addition, he has been honored by having at least six species named after him, including the southwestern blackhead snake, Smith's earth snake, Smith's arboreal alligator lizard, Hobart's anadia, Hobart Smith's anole, and Smith's rose-bellied lizard. At 100 years of age, Smith continued to be an active and productive herpetologist. Although he published on a wide range of herpetological subjects, his main focus throughout his career was on the amphibians and reptiles of Mexico, including taxonomy, bibliographies, and history. Having published more than 1,600 manuscripts, he surpassed all contemporaries and remains the most published herpetologist of all time.
Hydrophis is a genus of sea snakes, venomous snakes in the subfamily Hydrophiinae of the family Elapidae. Species in the genus Hydrophis are typically found in Indo-Australian and Southeast Asian waters. Currently, around 36 species are recognized as being valid.
Nordens Ark is a zoo located on the 383-hectare (950-acre) Åby Manor in Bohuslän, Sweden. Nordens Ark was opened in 1989 and is operated by the Nordens Ark Foundation. Nordens Ark is on the west coast of Sweden, not far from the border with Norway. Victoria, Crown Princess of Sweden, was appointed as Nordens Ark Supreme Protector in 1989.
The Chennai Snake Park, officially the Chennai Snake Park Trust, is a not-for-profit non-governmental organization constituted in 1972 by herpetologist Romulus Whitaker and is India's first reptile park. Also known as the Guindy Snake Park, it is located next to the Children's Park in the Guindy National Park campus. Located on the former home of the Madras Crocodile Bank Trust, the park is home to a wide range of snakes such as adders, pythons, vipers, cobras and other reptiles. The park gained statutory recognition as a medium zoo from the Central Zoo Authority in 1995.
Professor Miguel Vences is a German herpetologist and evolutionary biologist. Much of his research is focused on the reptiles and amphibians of Madagascar.
The 1st Marine Regiment is a marine regiment of the Swedish Amphibious Corps based at the Berga Naval Base in Berga, Haninge Municipality. Raised from the Vaxholm Coastal Artillery Regiment in 2000 when the Swedish Amphibious Corps was formed, the 1st Marine Regiment has a large geographical spread where units are trained and grouped at Berga, south of Stockholm, in Gothenburg and in Gotland. Although the unit's natural combat environment is coastal zones, river deltas and other amphibious areas, the unit has the ability to operate in all types of terrain, such as desert. The 1st Marine Regiment has participated in operations in, for example, Kosovo, Gulf of Aden, Chad and Afghanistan.
