Tanner, a golden retriever, was sadly born blind. To make matters worse, the pooch suffered from seizures. Tanner was blessed with a loving owner for the first year of his life, but when that owner died, his disabilities made him a tough sell at the animal shelter. In fact, Tanner's minders where pretty sure they were going to have to put him down. But then something extraordinary happened.

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Blair, another dog with a difficult past, was brought to the Woodland West Animal Hospital in Tulsa, Oklahoma. She had been shot when she was a puppy, and because of that the one-year-old mixed-breed lab was nervous around people and other dogs.

But, for whatever reason, Blair immediately took to Tanner. She began leading him around the yard by the leash -- like a service dog would for a blind person.

As their friendship blossomed, Blair started to come out of her shell more, and Tanner stopped having his seizures.

For this heartwarming story to have a truly happy ending, somebody will need to come forward and adopt both dogs. We have our fingers crossed, as we reach for our box of tissues.