In one area, paternal care was the social norm, while this behavior was absent elsewhere.

In this system the males provide no paternal care.

Males do not provide paternal care to their offspring.

Yet his father was a lot nicer than hers had been.,Her memories of paternal care were the kind you woke up at night sweating from.

Females provide only for their own cubs rather than assist each other, and males display no paternal care.

Human cultures and societies vary widely in the expression of paternal care.

Some cultures recognize paternal care via celebration of Father's Day.

The proximate mechanisms of paternal care are not well understood for any organism.