Chordata

Includes photographs and information on a wide range of mammals and reptiles from Canada, the United States and Mexico. Includes fact sheets and distribution maps.

Worldwide database compiled from the ornithological literature of birds with two different species as parents. Includes complete references for each species combination. In English, French, and Spanish.

Identification key and guide to all families of fishes in Puget Sound (Washington, USA).

Images, distribution maps and other data on North American freshwater fish.

Annotated checklists of Canadian, Iranian and Iraqi freshwater fish.

Photograph and article from Wikipedia on this barrel-shaped tunicate, including its distribution, nervous systems, relationships and classification.

Photographs of frogs of Ecuador, Trinidad, Tobago, and the Lesser Antilles.

Detailed information about the species for everyone from beginners to advanced researchers. Includes bibliography and APUSlife, a virtual magazine.

Identification tips, migration status, breeding habitat, and taxonomy chart.

Photo, range maps, and facts on this bird's habitat, nesting, and behavior.

Affiliated with the University of Basel, Switzerland. Focuses on the behavioral ecology of passerines.

Image, taxonomy chart, list of similar species, and identification tips for this bird.

Information from Wikipedia on these birds in the family Pteroclidae, their appearance, biology, habits and taxonomy.

An infobook with a great deal of information on penguins, their biology and behavior.

Translation of the word owl in Harry Potter in Chinese, Japanese, and Vietnamese.

Has descriptions, with markings and pictures for about 19 owls, from the non-profit Owl Research Institute in Montana.

Information from Wikipedia on this genus of near passerine birds from the New World.

Descriptions and photos of native and introduced fish species found in Australian desert waters, as well as their habitats.

A comprehensive source of information on the biology of sharks and rays including behavioral studies.

An organization devoted to the study and conservation of sharks, rays, skates and chimeras.

An illustrated introduction to the Myxini.

Article about a species that invaded the Great Lakes of North America from the Atlantic Ocean and efforts to control its spread.

Provides species-specific information in encyclopedia format.

General information about Hawaii's cetaceans and specific information on humpback whale sightings off the Kona Coast of Hawaii.

Information from Wikipedia on the production of sounds by whales and their purpose, with some audio clips.

Online resource of mammalian brains which covers 16 species of bat, some with photos and further information.

Information from Wikipedia on the characteristics of these herbivores, their prehistory and their relationship to elephants.

Physical characteristics of the three species and information on their behavior and habitat in Africa.

Fact sheet from EDGE, a conservation organization that focuses specifically on threatened species that represent a significant amount of unique evolutionary history.

Fact sheet from EDGE, a conservation organization that focuses specifically on threatened species that represent a significant amount of unique evolutionary history.

Photographs and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation.

Factsheet from Arkive with videos and images, description, range, habitat, biology and conservation.

Physical characteristics, diet, and habitat, of Orycteropus afer.

Some photographs of Dendrobates imitator frogs in Peru and the species they resemble.

Article from Wikipedia on this family of primitive frogs, native to Europe and North-West Africa.

Photographs and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation.

Photographs and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation.

Information about Rana aurora draytonii, a threatened frog of the western US.

Information about several species and hybrids in the genus Rana.

Wikipedia article on Nasikabatrachus sahyadrensis which is found in southern India and lives underground for most of the year.

Research project by Britni Osuldsen on this salamander including its classification, habitat, reproduction and adaptations.

Photograph of Anderson's salamander, found in one lake in Mexico.

Several photographs of the ringed salamander.

Article from Wikipedia on this family of salamanders found in the Western USA and South Western British Columbia.

Several photographd of the Red Hills Salamander.

Photographs, video clips and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation.

Student project with classification, habitat, adaptation, diet, reproduction and interactions with other species.

Photographs, identification tips, and a taxonomy chart for this species.

Description of this desert species, photographs of male and female, range map, sound file and status.

Photographs of male and female, sound file, description, range and status.