Herpetologist in the context of Tuatara

Johann Friedrich Gmelin (8 August 1748 – 1 November 1804) was a German naturalist, chemist, botanist, entomologist, herpetologist, and malacologist.

Karl Hermann Konrad Burmeister (also known as Carlos Germán Conrado Burmeister) (15 January 1807 – 2 May 1892) was a German Argentine zoologist, entomologist, herpetologist, botanist, and coleopterologist. He served as a professor at the University of Halle, headed the museum there and published the Handbuch der Entomologie (1832–1855) before moving to Argentina where he worked until his death.

Hermann Schlegel (10 June 1804 – 17 January 1884) was a German ornithologist, herpetologist and ichthyologist.

Oliver Perry Hay (May 22, 1846 – November 2, 1930) was an American herpetologist, ichthyologist, and paleontologist.

Hay was born in Jefferson County, Indiana, to Robert and Margaret Hay. In 1870, Hay graduated with a bachelor of arts from Eureka College in Illinois. He taught at the college as a sciences professor from 1870 to 1873. He married Mary E. Howsmon of Eureka, Illinois, in 1870. He was a professor at Oskaloosa College in Iowa from 1874 to 1876. He was a student at Yale University from 1876 to 1877. Seventeen years after earning his bachelors, he earned his PhD from Indiana University in Bloomington, Indiana. From 1877 to 1879, he taught at Abingdon College just before it was incorporated into his alma mater, Eureka College. His longest professorship was at Butler University from 1879 to 1892. From 1894 to 1895, he worked at the Field Museum of Natural History as assistant curator of zoology, where despite his specialty in ichthyology, he worked in all nonornithological fields of zoology. In 1912, Hay was appointed as a research associate at the Carnegie Institution for Science, and was given office space at the United States National Museum. There, he did much work with the USNM's collections in vertebrate paleontology. He published extensively on fossil turtles and Pleistocene mammals. The catalogs that he constructed were a great aid in recording existing knowledge and became standard references. His papers from 1911 to 1930 are stored at the Smithsonian Institution.

The blue poison dart frog or blue poison arrow frog (Dendrobates tinctorius "azureus") is a poison dart frog found in the "forest islands" surrounded by the Sipaliwini Savanna in southern Suriname. Its indigenous Tiriyo name is okopipi. The name "azureus" comes from its azure blue color. While first described as a valid species and usually recognized as such in the past, recent authorities generally treat it as a morph of D. tinctorius, although a few treat it as a subspecies of D. tinctorius or continue to treat it as its own species. To what extent it differs from the blue D. tinctorius in southern Guyana, adjacent Pará (Brazil) and possibly far southwestern Suriname, is also a matter of dispute, and many herpetologists, as well as many people keeping poison dart frogs in captivity, have not distinguished these, with all commonly being identified as "azureus". Members of the Dendrobatidae family, including D. tinctorius "azureus" have been used as a model organisms in the study of chytridiomycosis, a fungal disease that affect amphibians worldwide.