A "bonding period" refers to a specific duration of time during which people or animals form a close connection or relationship with each other. Full definition
So it's essential that the guardian dogs should be placed with the livestock that they will grow up to guard during their primary bonding period. (breedingbusiness.com)
* Birth and the postpartum bonding period * The importance of skin to skin * Proper latching techniques * Getting and maintaining a proper milk supply * Avoiding common «booby traps» * When / if to introduce bottles and pacifiers * When / if to pump and how to get started * Roles for the support person in a breastfeeding relationship (waddlenswaddle.com)
may change from biological recovery from childbirth and special bonding period between mother and child. (stronachs.com)