Maturity is occurring at an earlier age in our domestic dogs because of selective breeding. Additionally, domestic bitches (except African breeds) have twice as many seasons as wild wolves. This article discusses the physiology of pregnancy and false pregnancy (pseudocyesis), and ways of helping bitches with false pregnancies.
The Oestrus Cycle: Bitches’ seasons occur every 8-9 months. During proestrus they will have a blood stained discharge and show an interest in males. In the second phase, Oestrus, ovulation occurs, and the female is most fertile. The next phase, dioestrus, is when the bitch is hormonally pregnant. The corpus luteum, formed at ovulation in the ovary, matures and produces female hormones. These then stimulate prolactin secretion …