Developmental Stages of a Puppy
1-14         Not responsive to humans Sleeps-eats
days        Needs stimulation

15-21       Eyes open-Begins to walk (worming)
days        Needs mom and stimulation

22-35       Begins to eat, bark, and play
days        outside the puppy pen

6-7th       Strong dominant/subordinate relationships
wks         and developing.  Start puppy shots, leach            
               training - simple commands "no" etc.

8 wks      Often termed the "fear period" Puppy                   
               should not be frightened or unnecessarily            
               stressed during this week

9-12         Bonds to humans...Learning sit-stay. Needs        
wks         confidence instilled.  Needs exposure  

16-24        Security-Discipline-Socialization goes through
wks         "avoidance period" Needs low key socialization

6-8           Basic Training-Consistent discipline-continued
mo           attention and socialization.  Obedience classes

8-12         Reassurance necessary.  "puppy bloom"
mo           teething  ends Puberty begins- Chance Food

12-18        Structured training-love Most Shelties out of
mo           coat now First mating-Traning more intense        
                some are not ready for the stress at this age      
                so be careful