Future guide dogs begin training at a young age with puppy walkers who help train them. German Shepherds, Labs, and Golden Retrievers are commonly used as guide dogs due to their obedience and learning abilities. Guide dogs are trained on crosswalk skills like curb techniques which are essential for safely navigating intersections. Police dogs and search and rescue dogs also provide important services, with police dogs assisting law enforcement and SAR dogs locating people in debris or avalanches. Working dogs can also be trained to detect drugs or explosives. Guide dogs provide independence for the blind but also loyal companionship.