Just want to introduce myself and my little Chi guy, Paco. We live in SD and I've had Paco for about five weeks now. I found him when I delivered some dog food to our shelter. He's six pounds, quite skinny, and I was told he's probably about a year old. I'm very much into Westies and Toy Poodles but have wanted a Chihuahua for some time now. I knew what I wanted as far as color, markings, etc and when I first saw Paco was surprised to see he had it all. As an added bonus, on his muzzle, right before the black of his nose begins, he has the cutest perfectly shaped little pink heart! It's just the coolest thing! Is this a common marking in this breed? I'm looking forward to "meeting" the rest of you and learning more about Chihuahuas and how to properly care for them. I consider myself an expert (well, kind of!) on Westies and Poodles but certainly not when it comes to Chis.