4. Lowchen ($5,000 to $8,000) LÃ¶wchen means âlittle lionâ in German, a fitting name for this small dog with an impressive mane of hair and talent for agility. The breed is often given a âlionâ trim, too: clipped close to the skin at the hindquarters, with cuffs of hair around the ankles and a plumed tail.
Vestigial describes an organ or body part that continues to exist without retaining its original function, such as our appendix. It's most often used in biology to describe something that either didn't finish developing or has become, through evolution, pretty much useless.
Atrium: The chamber of the heart that collects blood returning from the rest of the body. In all vertebrates but fish, there are two atria, left and right. The right atrium collects deoxygenated blood from the body and passes it to the right ventricle. The left atrium collects oxygenated blood from the lungs and passes it to the left ventricle.