The chapter explains how cooperative benevolence promotes love for members of the ingroup and fosters kinship love for relatives. These types of love are widely present across many species, especially among mammals. Animals exhibit their love through the behavioral tendencies of kin selection and kinship favoritism. The studies presented there demonstrate how genetic ties, kinship bonding, and behavioral conditioning set the ground for interpersonal love. The materials of the following sections review the studies on how animals and humans exhibit their benevolent love for kin and ingroup members through empathy and compassion, as well as caring and altruistic behaviors.