allomother

A human or other creature that provides some maternal care for the young born of another.

Within hours of birth, baby langurs are spirited away from their mothers. They spend up to 50 percent of daylight hours passed from allomother to allomother

Among the !Kung foragers of the Kalahari, babies are held by a father, grandmother, older sibling or some other allomother maybe 25 percent of the time.

To provide maternal care for another creature's young.