Love is not unique to human beings. Dogs love, elephants love, whales love. In fact, almost all mammals love their young (at least until they are grown and independent); many love their mates; and a number of them love their brothers and sisters. [note] Vicki Croke, “Animals Do Have Emotions, But What Should We Call Them?” 8/28/14, WBUR’s The Wild Life. [/note]
Animals of different species may also learn to love each other, particularly if they live in a protected environment. For examples see “Animal Odd Couples,” from the television series Nature, on PBS. [note](http://www.pbs.org/wnet/nature/animal-odd-couples-full-episode/8009/.)
Love is the deepest form of interconnection that humans can experience because it involves not just intellect, but also emotion and a great sharing of time, effort, and wealth. Family love especially enlists our genetic drive to pass on our genes. Love makes it possible for human parents to fulfill our children’s needs during their uniquely long period of childhood dependency.
While the sharing of time and resources is limited, human love in the forms of empathy, kindness, and emotional connection can flower and grow over an entire lifetime. Ants or computers may succeed the human race as principal occupier of Earth, but it’s unlikely that they would have the same capacity for love as humans… or as dogs, elephants, and whales now have.
As a religious naturalist my vision of Love calls for different levels of love and concern for the different circles of each person’s acquaintance, and this is consistent with our biological Nature. Usually, we naturally have more love for members of our immediate family than we do for our extended family, and we have even less for strangers who live far from us.