The wolves here age differently than those in the 'real world.' For starters they can live to be 50yrs old. So here is the Ranking system:
o-12months - Pups
1yr-4yrs - Teens ~ This is when their magical nature comes out. When it manifests they are either out into their packs training program (If they have the Pack's Nature) Or they are sent to another pack during the Exchange)
5yrs-15yrs - Young Adult ~They earn the right to be considered adults. If they act like pups they get treated like them with harsher punishments.
15yrs-25yrs - Adult
25yrs-50yrs or death - Elders
From 6yrs to 25yrs the wolves can have pups. However they follow the mate for life policy.