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Birds are a group of warm-blooded vertebrates constituting the class Aves (Latin: [ˈaveːs]), characterised by feathers, toothless beaked jaws, the laying...

A sex worker is a person who provides sex work, either on a regular or occasional basis. The term is used in reference to those who work in all areas of...

Norovirus, also known as Norwalk virus and sometimes referred to as the winter vomiting disease, is the most common cause of gastroenteritis. Infection...

A sex position is a positioning of the bodies that people use to engage in sexual intercourse or other sexual activities. Sexual acts are generally described...

Human sexual activity, human sexual practice or human sexual behaviour is the manner in which humans experience and express their sexuality. People engage...

Oral sex, sometimes referred to as oral intercourse, is sexual activity involving the stimulation of the genitalia of a person by another person using...

A chordate (/ˈkɔːrdeɪt/ KOR-dayt) is a deuterostomal bilaterian animal belonging to the phylum Chordata (/kɔːrˈdeɪtə/ kor-DAY-tə). All chordates possess...

BDSM is a variety of often erotic practices or roleplaying involving bondage, discipline, dominance and submission, sadomasochism, and other related interpersonal...

The capybara or greater capybara (Hydrochoerus hydrochaeris) is the largest living rodent, native to South America. It is a member of the genus Hydrochoerus...

Masturbation is a form of autoeroticism in which a person sexually stimulates their own genitals for sexual arousal or other sexual pleasure, usually to...

The reindeer or caribou (Rangifer tarandus) is a species of deer with circumpolar distribution, native to Arctic, subarctic, tundra, boreal, and mountainous...

Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (/ˌændʒiəˈspərmiː/). The term 'angiosperm' is derived from the...

Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residues. Proteins perform a vast array of functions...

Prostitution is a type of sex work that involves engaging in sexual activity in exchange for payment. The definition of "sexual activity" varies, and is...

69 or sixty-nine is a sex position in which two people align themselves so that each person's mouth is near the other's genitals, allowing each partner...

Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins...

The German Shepherd, also known in Britain as an Alsatian, is a German breed of working dog of medium to large size. The breed was developed by Max von...

A flower, also known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Angiospermae). Flowers consist...

Sadism (/ˈseɪdɪzəm/) and masochism (/ˈmæsəkɪzəm/), known collectively as sadomasochism (/ˌseɪdoʊˈmæsəkɪzəm/ SAY-doh-MASS-ə-kiz-əm) or S&M, is the derivation...

A pornographic film actor or actress, pornographic performer, adult entertainer, or porn star is a person who performs sex acts on video that is usually...