When do dogs start producing milk? - briefly
Dogs typically begin producing milk around day 40 of their pregnancy, which lasts approximately 63 days in total. This process is known as lactogenesis and prepares the mother for nursing her puppies after birth.
When do dogs start producing milk? - in detail
Dogs begin to produce milk in response to hormonal changes that occur during pregnancy, particularly towards the end of gestation. The process is regulated by several key hormones, including progesterone, estrogen, and prolactin.
As pregnancy progresses, the placenta produces increasing amounts of progesterone, which helps prepare the mammary glands for milk production. Towards the end of gestation, typically around day 58 of a 63-day pregnancy, the levels of progesterone begin to decline. This decrease in progesterone allows estrogen and prolactin to stimulate the development of the mammary glands and initiate milk production.
The first milk produced by dogs is known as colostrum, which is rich in antibodies and nutrients essential for the newborn puppies' immune system and overall health. Colostrum is typically produced during the last few days before whelping (giving birth) and continues to be produced for a short period after the puppies are born.
It is important to note that the exact timing of milk production can vary among individual dogs, depending on factors such as breed, age, and overall health. However, in most cases, dogs will start producing milk within the last week or two of their pregnancy. If a dog does not produce milk or if there are any concerns about her ability to nurse her puppies, it is crucial to consult with a veterinarian promptly.