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.
Yorkshire Terrier Yorkie. 4.7. Commonly referred to as the âYorkieâ, the Yorkshire Terrier is a small dog with plenty of spark and personality. One of the most popular dog breeds in the United States, the Yorkie has a long silky coat that is steel-blue and tan in color.