The only worries you should have when your lion has reached the Adolescent stage is continuing their training, as well as ensuring that they will not run away upon aging up to an Adult.

Note: If you do not have enough territory or subordinate male slots for your adolescents when they reach adulthood, they WILL run away. Be sure to expand your slots accordingly by the time your teen lions reach 1 year 11 months of age!

To be added.