Dave Mienert, a filmmaker, discovered a 4-week old Great Dane puppy. She was the handiwork of a backyard dog breeder. She had a genetic disorder that would leave her blind and deaf eventually. All of her littermates had died or been born deformed.
This was not a healthy pup, but Miernet adopted her and named her Pegasus. He wasn't sure how long he would have with his new friend and so decided to record it all.
Pegasus often walks on a treadmill. Miernet compiled these scenes into a time-lapse video showing the weak puppy growing into a strong adult dog. He says, "I still don’t know how long she is going to live, but right now is pretty great."
-via Ace of Spades HQ
My dog was also rescued (from the street) when he was 9 months old and he's now 17 years old :) Bless Pegasus!