Guide dogs are not “just given” to a blind or visually impaired person.
The would-be handler is trained. We learn what to feed, how often and in what quantity. Generally the guide puppy has lived with puppy raisers and at the school, and have a file, which instructors share. “Your puppy eats two cups of “HappyDoggie” kibble a day.” or “Your dog is allergic to beef, so you should feed her chicken based foods.”
We learn how to bathe the dog and clip their nails, clean their teeth etc. We learn how to take the dog out and “leash relieve” them. We learn how to harness and unharness the dog, and how to check for rubbed or sore places where harness straps might have chafed. We learn how to care for the harness, clean it, and oil the leather, or repair it. We learn how to travel with the dog, get on and off buses, escalators (or how to avoid them, as they are VERY dangerous to dog paws!) elevators, trains etc. We learn how to pick up feces (put an inside out plastic bag over your hand, run it down Juno’s back shen she’s reliveving, and then straight down from the tail. It’s there. Pick it up and then reverse the bag! Voila! Feces in bag, bag into waste can.
We learn how to comb, brush, bathe and groom our dogs. We learn what they like and dislike and the dog learns about the student, too. The important point is that the dog looks to US for their daily everything! Food, care, work, relaxation, everything comes from the handler. Thus the dog is focused on us. And yes, training goes on for the dog’s life. Every couple of days or so, we do “Obedience” with the dog. “Come” “sit” “stay” Here” are all gone over in a quick 15 minute recital of the dog’s skills. Lavished with praise or quickly corrected (vocally. NEVER strike your dog!!) and the partnership is rock solid.