I was surprised to see a Ferretería store in New York City recently. Here’s a photo of an old-fashioned Ferretería in Madrid, in the suburb of Atocha. Alas, I discovered that a Ferretería is not a store where you buy ferrets, but an ironmonger’s shop, where you buy electric saws and nuts and bolts. Oh well.

Below, a black-footed Ferret, an American endangered species. They live off prairie dogs which they hunt at night — a ferret may eat more than a hundred prairie dogs in one year, provided they are available — but over the last hundred years, farmers killed off most of the prairie dogs, so American ferrets almost became extinct. Teeth like needles.