Can dogs have periods?

Among the species that constitute the animal kingdom, only female primates — ranging from the lemur to the human to the gorilla — have periods in the way we generally understand the term. Menstrual cycle vs. estrous cycle. In short, no, female dogs do not have periods in the same way that human females do. read more

Unspayed cats and dogs will have a period – or more correctly – come into heat. In female dogs, at the onset of heat, the vulva becomes quite swollen and will bleed. Some bitches bleed so much they will leave spots of blood all over the house. Others bleed so little you would hardly notice it. This portion of the heat will last for up to 3 weeks. read more