If they list things such as this as a fault in the standard you would have some judges who would DQ that pup with the thumbprint which is perfectly fine to have as a pup. Also I have found the ones that cleared that topknot thumbprint to fast end up way to light in the blue color on the body.
The Yorkie standard is one of the hardest in my own opinion because some many things in the standard can be read so differently by who is reading it and interperting it. Deana Prestigeous Yorkies |