I am writing you this letter to express my gratitude. You are an amazing professional, empathetic human being, and truly a pleasure to know. Here is some background on my story. I have a long haired Chihuahua named Senor Paco. Paco is 13 years young and has always been healthy as can be. I had purchased Dr. Carol’s senior pet vitamins for my dog in March 2008 after seeing the pet vitamins on an infomercial. I began giving him half a pill in the AM and half in the PM.