Search results

The white-tailed deer (Odocoileus virginianus), also known commonly as the whitetail and the Virginia deer, is a medium-sized species of deer native to...

Foot fetishism, also known as foot partialism or podophilia, is a pronounced sexual interest in feet. It is the most common form of sexual fetishism for...

Perissodactyla (/pəˌrɪsoʊˈdæktɪlə/, from Ancient Greek περισσός, perissós 'odd', and δάκτυλος, dáktylos 'finger, toe') is an order of ungulates. The order...

Natural history is a domain of inquiry involving organisms, including animals, fungi, and plants, in their natural environment, leaning more towards observational...

A dildo is a sex toy, often explicitly phallic in appearance, intended for sexual penetration or other sexual activity during masturbation or with sex...

An action potential occurs when the membrane potential of a specific cell rapidly rises and falls. This depolarization then causes adjacent locations to...

Coagulation, also known as clotting, is the process by which blood changes from a liquid to a gel, forming a blood clot. It results in hemostasis, the...

Gene therapy is a medical technology that aims to produce a therapeutic effect through the manipulation of gene expression or through altering the biological...

An electron transport chain (ETC) is a series of protein complexes and other molecules that transfer electrons from electron donors to electron acceptors...

The bloodhound is a large scent hound, originally bred for hunting deer, wild boar, rabbits, and since the Middle Ages, for tracking people. Believed to...

Dian Fossey (/daɪˈæn/ dy-AN; January 16, 1932 – c. December 26, 1985) was an American primatologist and conservationist known for undertaking an extensive...

The T helper cells (Th cells), also known as CD4+ cells or CD4-positive cells, are a type of T cell that play an important role in the adaptive immune...

The Manx cat (/ˈmæŋks/, in earlier times often spelled Manks) is a breed of domestic cat (Felis catus) originating on the Isle of Man, with a mutation...

The pileated woodpecker (/ˈpaɪliˌeɪtəd wʊdpɛkər, pɪ-/, Dryocopus pileatus) is a large, mostly black woodpecker native to North America. An insectivore...

Fish anatomy is the study of the form or morphology of fish. It can be contrasted with fish physiology, which is the study of how the component parts of...

Insect wings are adult outgrowths of the insect exoskeleton that enable insects to fly. They are found on the second and third thoracic segments (the mesothorax...

Muscle contraction is the activation of tension-generating sites within muscle cells. In physiology, muscle contraction does not necessarily mean muscle...

Pompoir is a sexual technique in which the woman uses her vaginal muscles to stimulate the man's penis. Both partners remain still, while the woman strokes...

The kudus are two species of antelope of the genus Tragelaphus: Lesser kudu, Tragelaphus imberbis, of eastern Africa Greater kudu, Tragelaphus strepsiceros...

Tilikum (c. December 1981 – 6 January 2017), nicknamed Tilly, was a captive male orca who spent most of his life at SeaWorld Orlando in Florida. He was...