The period of the estrous cycle related to maximum receptivity and fertility in non-primate female mammals. From a biological point of view, this stage of animal physiology is the one that allows the ovulation of females and, therefore, their sexual reproduction.
The heat period is cyclically repeated in the females of a species from the first ovulation, and is counted according to these from then until the end of the fertility period. Its frequency varies considerably depending on the species, from a few hours to several days or months.
In women there is a cycle of ovarian activity by virtue of which there are physiological changes in their entire reproductive system and from which certain behavioral changes are derived. However, as in women, sexual acceptance is not limited to one part of the reproductive cycle (which is the case in most animals, although there are exceptions such as the bonobo (pan paniscus), the term estrus should not be used in women like the human, in which said sexual acceptance is independent of the reproductive cycle.
Estrus in the mare begins between 12 and 24 months, a stage that is equivalent to puberty in humans. At this stage, a series of physical and behavioral changes originate in the animal. The mare has several cycles of estrus at a certain time of the year, specifically in the spring.
In addition to the estrous cycle, the mare's reproductive capacity will be due to a series of external factors, such as weather, light, temperature or the possibilities of obtaining food. On the other hand, age and race are also two other factors that intervene in their fertility.
The mare's estrus is the period between two ovulations and consists of two phases, the luteal and the follicular. Both phases allow the woman to be sexually receptive.
The term estrus is not only used in relation to the animal world. In this way, when a poet is in a special moment of inspiration, "estrus" appears, also known as poetic estrus. It is a cult that is hardly used in ordinary language. Putting the word in context, one could say that "the romantic poet is moved by estrus," a sentence in which estrus equals inspiration.
From an etymological point of view, estrus comes from the Greek oistro, which means thorn. Therefore, the poet's estrus becomes an unexpected and special moment, like the sting of a bee.
