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  2. Four Fs (evolution) - Wikipedia

    en.wikipedia.org/wiki/Four_Fs_(evolution)

    The list of the four activities appears to have been first introduced in the late 1950s and early 1960s in articles by psychologist Karl H. Pribram, with the fourth entry in the list being known by terms such as "sex" [2]: 11, 13 or occasionally "fornicating", [3]: 155 although he himself did not use the term "four Fs".

  3. Instinct - Wikipedia

    en.wikipedia.org/wiki/Instinct

    Instinct is the inherent inclination of a living organism towards a particular complex behaviour, containing innate (inborn) elements.The simplest example of an instinctive behaviour is a fixed action pattern (FAP), in which a very short to medium length sequence of actions, without variation, are carried out in response to a corresponding clearly defined stimulus.

  4. Estrous cycle - Wikipedia

    en.wikipedia.org/wiki/Estrous_cycle

    Female dogs bleed during estrus, which usually lasts from 7–13 days, depending on the size and maturity of the dog. Ovulation occurs 24–48 hours after the luteinizing hormone peak, which occurs around the fourth day of estrus; therefore, this is the best time to begin breeding.

  5. Female copulatory vocalizations - Wikipedia

    en.wikipedia.org/wiki/Female_copulatory...

    Sonograms of female copulatory vocalizations of a human female (top), female baboon (middle), and female gibbon (bottom), [19] with time being plotted on the x-axis and the pitch being represented on the y-axis. In non-human primates, copulatory vocalizations begin towards the end of the copulatory act or even after copulation. [2]

  6. Lists of animals - Wikipedia

    en.wikipedia.org/wiki/Lists_of_animals

    Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million in total. Animals range in size from 8.5 millionths of a metre to 33.6 metres (110 ft) long and have complex interactions with each other and their environments, forming intricate food webs .

  7. Female - Wikipedia

    en.wikipedia.org/wiki/Female

    [7] [11] In the 21st century, the noun female is primarily used to describe non-human animals, to refer to biologically female humans in an impersonal technical context (e.g., "Females were more likely than males to develop an autoimmune disease"), or to impartially include a range of people without reference to age (e.g., girls) or social ...

  8. Maternal behavior in vertebrates - Wikipedia

    en.wikipedia.org/wiki/Maternal_behavior_in...

    Vertebrate maternal behavior is a form of parental care that is specifically given to young animals by their mother in order to ensure the survival of the young. [1] Parental care is a form of altruism, which means that the behaviors involved often require a sacrifice that could put their own survival at risk. [1]

  9. Category:Animal female reproductive system - Wikipedia

    en.wikipedia.org/wiki/Category:Animal_female...

    Mammal female reproductive system (6 C, 86 P) Pages in category "Animal female reproductive system" The following 2 pages are in this category, out of 2 total.