When animals are growing up. They stray further from their parents help. Which is the same towards teenagers. You stray futher from ur parents help, and inturn; becoming more independent.
Animals also go out into the wilderness to hunt. Which could be conveyed in the same manner as teenagers. U grow up, get ur qualifications and contribute into society. Which could be portrayed as the "wilderness." Which is a state of independence since your making your own money. And making your own contribution to the world.