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.
Chorkie - Willful and Affectionate. The Chorkie also known as the York-chi, Yorkie-chi, Yorkiechi and the Chia-Yorkie is a mix of the Yorkshire Terrier and the Chihuahua. She is a small dog with a lifespan of 10 to 15 years and is in the groups of terrier and toy, with talents of companion and watchdog.