Puppies start walking more than 20 days after birth. Since a dog's bones are not fully developed when he is born, a newborn dog can only crawl. During the period of growth and development, if sufficient nutrition is provided, the dog's bone development will be relatively complete, and the dog will generally start walking after more than 20 days, and some dogs will not start walking until more than 30 days ago.

Generally when puppies look for milk from a big dog, they crawl to the big dog. A big dog usually walks back and forth holding a newborn puppy by its neck. After one month, the puppy needs to increase its nutrition and can be fed calcium paste or nutritional paste.