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 breeds for guide dogs due to their obedience and learning abilities. Guide dogs are trained on crosswalk skills like navigating intersections which is important for safety. They can also be trained for tasks like using ATMs. Police dogs serve communities with unfailing loyalty and obedience, helping locate drugs and bombs. Search and rescue dogs find people in disasters while cadaver dogs detect human remains. Guide dogs provide companionship and care for their blind partners.