What's in your genome?
With DNA tests becoming increasingly available, owners of mixed-breed dogs can find out the heritage of their "All-Americans" with just a few cheek swabs.
And now a pitbull owner has used DNA identification to prove that his very pitbull-looking dog isn't a pitbull at all. (Boxer, it appears, was the culprit.)
In another story about troublesome pedigrees, check out last week's column about the roadblocks facing owners of wild-derived cat breeds such as Bengals and Savannahs in New York State: They must be six generations removed from their "wild" ancestor in order to be legal here.

