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  2. Estrous cycle - Wikipedia

    en.wikipedia.org/wiki/Estrous_cycle

    Between then and midnight there is a surge in progesterone, luteinizing hormone and follicle-stimulating hormone, and ovulation occurs at about 4 am on the next estrus day. The following day, metestrus, is called early diestrus or diestrus I. During this day, the corpora lutea grow to a maximal volume, achieved within 24 hours of ovulation ...

  3. Rut (mammalian reproduction) - Wikipedia

    en.wikipedia.org/wiki/Rut_(mammalian_reproduction)

    The most prominent behavior of all during the heat of the rut is fighting, where bucks show their true dominance to others. In fighting, bucks usually battle against similar-sized deer, and small bucks do not normally challenge mature large ones: more often than not, smaller bucks fear the more mature bucks and leave or avoid the dominant deer ...

  4. Menstruation (mammal) - Wikipedia

    en.wikipedia.org/wiki/Menstruation_(mammal)

    This period of advertised fertility is known as oestrus, "estrus" or heat. [9] In species that experience estrus, females are generally only receptive to copulation while they are in heat [9] (dolphins are an exception). [10] In the estrous cycles of most placentals, if no fertilization takes place, the uterus reabsorbs the endometrium.

  5. What to Do When Your Cat Is in Heat (Without Overstepping ...

    www.aol.com/lifestyle/cat-heat-without...

    Unlike humans who menstruate, felines in heat do not shed the lining of their uteruses, so there should be no bloody discharge. Heat begins around six months old in female cats.

  6. Lordosis behavior - Wikipedia

    en.wikipedia.org/wiki/Lordosis_behavior

    Lordosis behavior (/ l ɔːr ˈ d oʊ s ɪ s / [1]), also known as mammalian lordosis (Greek lordōsis, from lordos "bent backward" [1]) or presenting, is the naturally occurring body posture for sexual receptivity to copulation present in females of most mammals including rodents, elephants, cats, and humans.

  7. Human thermoregulation - Wikipedia

    en.wikipedia.org/wiki/Human_thermoregulation

    As in other mammals, human thermoregulation is an important aspect of homeostasis. In thermoregulation, body heat is generated mostly in the deep organs, especially the liver, brain, and heart, and in contraction of skeletal muscles. [1] Humans have been able to adapt to a great diversity of climates, including hot humid and hot arid.

  8. Life and death in the heat. What it feels like when Earth's ...

    www.aol.com/news/life-death-heat-feels-earths...

    On Wednesday, there were 21 heat-related deaths at Beni Mellal’s main hospital as temperatures spiked to 48.3 degrees (118.9 degrees Fahrenheit) in the region of 575,000 people, most lacking air ...

  9. Human reproduction - Wikipedia

    en.wikipedia.org/wiki/Human_reproduction

    This is an accepted version of this page This is the latest accepted revision, reviewed on 21 December 2024. Procreative biological processes of humanity Part of a series on Sex Biological terms Sexual dimorphism Sexual differentiation Feminization Virilization Sex-determination system XY XO ZW ZO Temperature-dependent Haplodiploidy Heterogametic sex Homogametic sex Sex chromosome X chromosome ...