As Jerry, a Labrador retriever, approached a crosswalk, he came to a stop at the curb. His trainer, Keum Jung-hun, had given no command. Jerry simply recognized the boundary between the sidewalk and the road and stopped on his own. Keum pressed a small device, producing a sharp click. Known as a clicker, the tool signals that Jerry has performed a task correctly. "It means he did a good job," Keum explained. "Verbal praise takes time, but a clicker lets us mark the exact moment he does something right." Jerry is an almost 2-year old guide dog in training. The Korea Times met him during a training session at Samsung Guide Dog School on Nov. 2. The school in Yongin, Gyeonggi Province, is fully funded by Samsung Fire & Marine Insurance. After six to seven months of professional training, he has passed his final walking assessment and is now completing the remaining steps before being paired with a visually impaired partner. Accompanying Jerry and Keum on their morning training walk outside the school grounds near Bundang Central Park in Seongnam, Gyeonggi Province, revealed that guide dog tr