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.
Yorkie Bichon. The cross between a Yorkshire Terrier and Bichon Frise, Yorkie Bichon, is a designer dog known for their cute looks and low maintenance costs. This toy dog, with a blunt muzzle, black nose, round skull and eyes, and a long tail, has been recognized by different names.