How to Care for a Yorkshire Terrier By: Nancy Frensley Updated on: April 05, 2017 Part of the video series How to Care for a Yorkshire Terrier How to Care for a Maltese How to Care for a Bichon Frise Related About the Author Nancy Frensley is a certified pet dog trainer. She has been a dog trainer and behaviorist since 1985. Frensley is the K-9 program leader and training manager of the K-9 College at the Berkeley East Bay Human Society.