It depends on the primate. Theoretically-sorry if that's spelt wrongly-until the baby becomes indipendant. In humans it lasts a lifetime. I don't know why this is, but i have my own theories. Hope I helped high-5 yay
the last supper last when jesus says one of you will betray me then the followers were asking if it was "me" or "me" jesus told them you know who you are then when jesus went to pray in a queit place...