I bought Melvin just before Thanksgiving. (11/25/14) I was told that he was a Chihuahua x Min Pin... But scribbled on a note on the Vet paper it said part Rat Terrier too. I could not get a straight answer. He is not neutered as my Vet does not neuter small dogs before 6 mos of age. He also has a bad tail dock. It is longer than it should be (This was how I bought him)