JUVENILE PERIOD: WEEK 14–MONTH 6 TO 12
The juvenile period starts somewhere between the fourteenth and sixteenth weeks of age, and it ends at the onset of puberty. However, larger breeds have longer growth periods, so they do not typically achieve reproductive maturity until six to 16 months of age.
During the fourteenth week of life, pups in the juvenile stage begin exhibiting independent and exploratory behaviors. The first fruits of the socialization period will become apparent at this time. Well-socialized puppies will begin initiating comfortable interaction with people and other animals. Continued socialization efforts are necessary throughout the juvenile period, since previous positive socialization experiences can fade from your puppy’s memory if they aren't reinforced.
ADOLESCENT PERIOD: MONTH 6 TO 12–MONTH 18 TO 24
Adolesence begins when a puppy reaches puberty, which typically occurs between six months to one year of age. The adolescent's brain is fully developed and contains the learning capacity of an adult dog. This stage is all about crossing boundaries, testing behavioral guidelines, and challenging members of the family. The use of positive reinforcement and consistent guidelines will help the adolescent avoid later behavioral problems. Remember, practice makes permanent, so it is wise to continue providing positive socialization experiences for your pet from puppyhood onwards.
