Rex the dog has come a long way.
He was a stray who lived a hard life of fighting other dogs and killing cats on the streets. Then Ed Gernon of Whittier, California rescued him.
Having been rescued, Rex pushed on the cycle of kindness. He brought Gernon's attention to a sick hummingbird, lying on the ground and covered with ants.
The pair nursed the bird, whom they named Hummer, back to health. Now Hummer lives with Gernon and Rex. She's Rex's constant companion. You can read more about them at CBS News Los Angeles (auto-start video).
-via Incredible Things