Saving Carson Shelter Dogs posted a video of a shy dog completely flipping out when he realizes he's adopted and free. The group is a Facebook community devoted to sharing success stories when dogs at a high-kill shelter in California are adopted.
Benny, the dog in the video, is indeed a success story. He bucks like a horse once he gets out of his cage, and really lets loose in the parking lot on the way back to his new home. And unlike some other dogs that get rescued, he didn't even have to post a shameless sign on Facebook asking to be adopted. Benny has an extremely high vertical when he jumps for joy: