Rose Ear: A small drop ear that folds over and back so as to reveal the burr.

Rottweiler: A German breed of dog having a stocky body, short black fur, and tan face markings.

Rounding: Cutting or trimming the ends of the ear leather.

Ruby: A rich, mahogany red (English Toy Spaniel). Color definitions may vary by breed. Always check the breed standard for the definitive color description.

Rudder: The tail or stern.

Ruddy: A dark ginger red color.

Ruff: Thick, longer hair growing around the neck.

Rust: Used to describe several breeds, this color is a medium-brilliant reddish brown. Color definitions may vary by breed. Always check the breed standard for the definitive color description.