Most pups at a young age have a very strong pack drive, puppies who wander and are lost may not find their way home so they're driven to stay close. When they're young most utilize this drive to work on recall from day 1 when they come home.
If the pup is prone to wandering then I keep them onleash until they've proven trustworthy, but if that trust is broken even once then the leash goes back on until I feel they've earned the trust back. The dog quickly learns that to have fun and run without a leash there are rules that have to be followed
Recall to me is non-negotible. There is no second, third, or fourth try, there is only one try and if they don't listen then game over and leash goes back on. Also, I make recall extremely rewarding, it's a huge party when the dog leaves whatever it is and comes back. Even now when I call my dogs they get a "good boy" and "good girl" and either a quick play session or fun time when they come.
Jasmine - Female Miniature Poodle - born Aug 15, 2010
Loker Delgado Von Stalworth - Male GSD - born Jan 26, 2012
Koda & Zazu - 5 year old male cats
Alex - Male Cocker Spaniel (rescue) - RIP Cuddlebug 2007-2010