I work with a Dog Rescue Group in my area. I've seen Dogs that would break your heart from whats been done to them.
we try to find them a home or in some cases, just somewhere to live out their last few days.

on any given weekend, there are roughly 40 - 80 'Transports' - Dogs are moved from place to place by volunteers, each taking a 'leg' of the journey-  going on in our area by various rescue groups. My Wife regurlay transports dogs on a leg of their journeys while I handle the 'Tech Support; for the group and assist in dog handling.

infact our 2 Hounds 'Billy' and 'Smiley' are Rescues.

When my Wife Sandi first met Billy (Harrier Hound), he was at a 'No Kill' Shelter in London, Ontario. he had ear infections, his fur was hanging off and while the staff there treated him with all kindess, they had given up on him finding a home due to his fear of humans, while we have no details, we know that he had been beaten. that was 5 years ago... now Billy is a healthy gentle hound who is a delight to know and one of the most intelligent dogs I've ever met. Sandi never gave up on her "Soul Puppy" and now they are inseperable.

Smiley (Treeing Walker Hound) on the other hand was never abused.. but abandoned after he failed to be a hunting dog. Being afraid of loud noises, he runs the other way and hides... he spent 6 months at a shelter in Ohio before being inducted into the Prisoner Dog Program for 90 days after which he was returned to the Shelter.  Unfortunatley, no one wanted him and when the group found him he was 2 days away from being euthanised. They asked us to take him, to which we agreed to do, so long as he and Billy got along.

they are now Packmates and Smiley is a joy and now my Soul Puppy ;)