50 Shades of Spay: No Litters, Baby. That's the sign in front of the Chelsea Veterinary Clinic on the lower west side of Manhattan, where I'm currently standing on what is clearly another crappy Saturday morning. I'm at a vet clinic. It's not even my dog - pet sitting has gone horribly wrong. Last night is, well, fuzzy. Then in walks Dr. Herriot. Sex in scrubs. The...