If you’d like to join a public Pack, click the "Join" or "Request to Join" button (your options for joining are set by the owner of the Pack).
If you request to join a Pack, the owner or one of the admins of the Pack reserve the right to either accept or reject your request.
If a Pack is marked as "Closed," you cannot join. However, you can message the owner to consider your request.
Don't forget you can also create and join your own Packs, too.
Want to learn more? Check out this video for help on finding and joining Packs.