Petzlover
Very conducton puppy with 1st The first stage of prenatal growth in dogs is known as the germinal stage, which starts at fertilization and lasts for about two weeks. The fertilized egg, also known as the zygote, travels through the fallopian tube to the uterus during this period while undergoing rapid cell division. The placenta, which will feed the growing puppy, is formed once the zygote enters the uterus and settles in the uterine wall.[3] The embryonic period lasts from about day 14 of pregnancy until day 28 or so. With the growth of important organs and body systems, the embryo starts to take on a more recognizable shape at this stage. This involves the development of the digestive system, brain, heart, and lungs. An ultrasound can show the embryo at this time, which is about the size of a grape
