Tuesday, September 14, 2010

How Pets Made Us Humans


I don't have authority to speak for others but Max has made me more human, period. This hypothesis is getting louder these days that I cannot stop giggling and say, I told you so - How animals made us human.

In no other species do adults regularly and knowingly rear the young of other species and support them into old age; in our species it is commonplace. In almost every human culture, people own pets. In the United States, there are more households with pets than with children.

On the face of it, this doesn’t make sense: Pets take up resources that we would otherwise spend on ourselves or our own progeny. Some pets, it’s true, do work for their owners, or are eventually eaten by them, but many simply live with us, eating the food we give them, interrupting our sleep, dictating our schedules, occasionally soiling the carpet, and giving nothing in return but companionship and often desultory affection.

What explains this yen to have animals in our lives?

An anthropologist named Pat Shipman believes she’s found the answer: Animals make us human. She means this not in a metaphorical way — that animals teach us about loyalty or nurturing or the fragility of life or anything like that — but that the unique ability to observe and control the behavior of other animals is what allowed one particular set of Pleistocene era primates to evolve into modern man. The hunting of animals and the processing of their corpses drove the creation of tools, and the need to record and relate information about animals was so important that it gave rise to the creation of language and art. Our bond with nonhuman animals has shaped us at the level of our genes, giving us the ability to drink milk into adulthood and even, Shipman argues, promoting the set of finely honed relational antennae that allowed us to create the complex societies most of us live in today. Our love of pets is an artifact of that evolutionary interdependence.

The great value that was gained from these “living tools,” as Shipman calls them, also meant that people with a particular interest in animal behavior, and who were especially acute about observing, predicting, and controlling it, were more likely to thrive in early human societies and to have more offspring. To the extent that there was a genetic component to these skills, Shipman argues, it spread. Just as humans selected for certain traits in domestic animals, those same animals were unconsciously shaping their domesticators right back.

“Domestication was reciprocal,” Shipman writes in her Current Anthropology article. And our weakness for pets, she suggests, may be a vestige of that bilateral domestication.

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