FIRST 2 MONTHS (NEONATAL PERIOD, TRANSITION PERIOD, AND 1ST SOCIALIZATION PERIOD)
In the first 8 weeks of life, puppies gain use of all the senses, become mobile, start growing baby teeth, transition to eating solid foods, and become completely weaned (independent) from their natural mom. Learning is already rapidly occurring, making it important that human caretakers provide puppies with specific neurological stimulation, a complex environment, and careful, yet thorough, socialization for proper development and adjustment to living in human society. During this time, there are also very critical lessons that the puppies must learn from their dog moms and siblings. Therefore, puppies should not be removed from their original homes before 8 weeks of age.