As of late Monday afternoon, when I was finishing this column, the most frequently emailed story on The Times’s website for the previous week wasn’t about the polar vortex, Chris Christie or “Downton Abbey.” It was about cats. I suppose that’s no big shock. On blogs, on Facebook and all around the Internet, claws and clicks go hand in hand (or is that paw in paw?). While the meek may be inheriting the earth, the furry have already claimed cyberspace. But what is surprising — and indicative of a new chapter in the interactions of Americans and the animals around us — is the focus of the cat story in question.