Yorkie Pregnancy Stages (Complete Week By Week Guide)

If you’re expecting a litter of Yorkshire Terrier puppies, understanding the stages of your Yorkie’s pregnancy is essential for ensuring the health and well-being of both the mother and her puppies. Yorkie pregnancies typically last around 63 days, but knowing what to expect during each week can help you prepare for the arrival of the new additions to your family. Let’s explore the complete week-by-week guide to Yorkie pregnancy stages.

Week 1-2: Fertilization and Implantation

During the first two weeks of pregnancy, fertilization occurs when the male’s sperm fertilizes the female’s eggs. The fertilized eggs then travel down the fallopian tubes and implant themselves into the uterine lining. At this stage, there are no visible signs of pregnancy, but cellular development is underway.

Week 3: Embryo Development Begins

By the third week, the embryos begin to develop rapidly. The cells divide and form the beginnings of major organs, although they are still microscopic in size. While physical changes may not be noticeable in the mother, hormonal changes may cause slight changes in behavior or appetite.

Week 4: Embryo Growth Continues

During the fourth week, the embryos continue to grow and develop. By the end of the week, the embryos resemble tiny tadpoles, with the beginnings of a spinal cord, nervous system, and rudimentary limbs. The mother may begin to show subtle signs of pregnancy, such as increased appetite or slight weight gain.

Week 5: Fetal Development Progresses

At five weeks, the embryos are now considered fetuses, and their development becomes more recognizable. Facial features, including eyes, ears, and noses, begin to form, and the fetuses develop a distinct shape. The mother’s abdomen may start to swell, and her nipples may darken in color.

Week 6: Growth and Maturation

During the sixth week, the fetuses continue to grow rapidly, and their internal organs become more developed. By this stage, the mother’s pregnancy is typically evident, with a noticeable increase in her abdominal size. It’s essential to provide the mother with a nutritious diet and proper prenatal care to support the healthy development of the puppies.

Week 7: Skeletal Development

By the seventh week, the fetuses’ skeletons begin to ossify, or harden, and their coats start to develop. The mother may become more restless as she prepares for the upcoming birth. It’s a good idea to start preparing a quiet, comfortable whelping area for the mother to give birth and care for her puppies.

Week 8-9: Final Preparations

As the pregnancy nears its end, the mother may exhibit nesting behavior, such as digging or searching for a suitable birthing spot. By the end of the eighth week or beginning of the ninth week, the puppies are fully developed and ready to be born. Be prepared for the onset of labor, and provide the mother with the support and assistance she needs during the birthing process.


Understanding the week-by-week stages of Yorkie pregnancy can help you anticipate and prepare for the arrival of the new litter. Providing proper care, nutrition, and veterinary attention throughout the pregnancy is essential for ensuring the health and well-being of both the mother and her puppies. By being knowledgeable and proactive, you can help ensure a successful and happy outcome for the entire family.