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.
All About the Chorkie â The Yorkie Chihuahua mix. The small Chorkie is a mix between the Yorkshire terrier (Yorkies) and the Chihuahua. The popularity of this cute much loved dog surged during the 90s when the phenomenon of small dogs, especially Chihuahuas took off.