The pericardium is a tough, layered sac that wraps around the heart. When the heart beats, it slides easily within the sac. Normally, only 2 to 3 tablespoons of clear-yellow pericardial fluid are present between two layers, which lubricates the heart's movements within the sac.
Biewer. The Biewer (pronounced Bee-vair), also known as the Biewer Terrier, Biewer a la Pom Pon, Biewer Yorkshire Terrier, Biewer Yorkshire, or Biewer Yorkie is a variant of the Yorkshire Terrier.
Parti Yorkies: What is a Parti color Yorkshire terrier. Yorkie lovers know that a true Yorkie comes with specific traditional colors which are black and tan, but there is a Parti Yorkie, which comes also in white, except those two colors. The Classification for Parti Yorkies has been included by AKC since 2000.