Martin was my first Guide Dog Puppy. I raised him in 1997 before I met my husband. Martin was a yellow labrador and a cutie.
Note how the puppy coats have changed since then. Back then, the coats covered the puppy's whole back.
Martin was a difficult puppy to raise and he always had problems with people accidentally touching him in places he didn't want to be touched.
Martin growled at the vet when they took his temperature too many times, and he was career changed. He lived the remainder of his life with a couple in California. He went to work every day, either with his new mom at the dentist's office or with his dad at the construction site.
While I raised Martin, I also had a Great Dane that I had "inherited" from a roommmate that left without her.