Estrus may be the time period when the female is sexually receptive and able to breed. Ovulation occurs 24 hours once the acceptance with the male. As ova survive for as much as 4 times, a female Doggy can be impregnated by multiple male in the course of this period. https://cat-lifestyle-products24456.shotblogs.com/facts-about-online-pet-shop-uae-revealed-51145845