Noun
A genus of gadflies. The species which deposits its larvae in the nasal cavities of sheep is oestrus ovis.
A vehement desire; esp. (Physiol.), the periodical sexual impulse of animals; heat; rut.
Source: Webster's dictionaryDomestic dogs and certain small canids in captivity may come into oestrus more frequently, perhaps because the photoperiod stimulus breaks down under conditions of artificial lighting. Source: Internet
Hera then sent a gadfly (Greek oistros, compare oestrus ) to sting Io as she wandered the earth. Source: Internet
Dominant males may try to sequester a female for her entire oestrus period of approximately two weeks but usually are unable to retain her for the entire time. Source: Internet
Females are polyoestrus they have an oestrus ("heat") cycle every 12 days (this can vary from 10 to 20 days), citation open access publication - free to read each oestrus lasting one to three days. Source: Internet
Postpartum amenorrhea (absence of menstruation) lasts less than one year and a female may resume external signs of oestrus within a year of giving birth, though the female is probably not fertile at this point. Source: Internet
Reproduction Springbok mate year-round, though females are more likely to enter oestrus during the rainy season, when food is more plentiful. Source: Internet