Uncoding the Dog

William Saletan at Slate has this scathing article on the recent decoding of the dog genome and our willingness to "engineer" man's best friend:

The reason we targeted the dog genome for decoding is that it's useful for genetic research. The reason it's useful for genetic research is that dogs are neatly divided into breeds, each of which is plagued by specific diseases. And the reason dogs are divided into diseased breeds is that we made them that way. Dogs are the world's longest self-serving, ecologically reckless genetic experiment, perpetrated by the world's first genetically engineering species: us.

Each need, each breed, called for special traits. We bred collies for vigilance, Rottweilers for aggression, retrievers for obedience. In a span of decades, we bred ferocity into Dobermans and then, with equal deliberateness, bred it out. We treated dogs like guns. We designed and bought them for protection, then complained when they hurt us. When cities banned pit bulls, we bought Rottweilers. It was as easy as replacing an illegal assault weapon with a legal one.

In the course of engineering dogs to look, feel, and act as we wanted, we ruined millions of them. We gave them legs so short they couldn't run, noses so flat they couldn't breathe, tempers so hostile they couldn't function in society. Even our best intentions backfired. Nature invented sexual reproduction to diversify gene pools and dilute bad variants. By forcing dogs into incest (which we ban among humans, in part for biological reasons), we defied nature. We concentrated each bad gene in a breed, magnifying its damage: epilepsy for springer spaniels, diabetes for Samoyeds, bone cancer for Rottweilers. That's why the dog genome is so nifty: We can find disease genes just by comparing one breed's DNA to another's.

Well, too bad for the dogs. But three cheers for us and our experiment. "The dog genome is a wonderful playground for geneticists," exults the New York Times. "A treasure trove," says the San Francisco Chronicle. "A convenient laboratory," agrees Reuters.

Man's best friend, indeed.

And that pretty much sums up our attitude towards about all species on Earth but our own.