Sometimes people are in the right place at the right time to make a huge difference in someone's life.
Recently, Johnny Mathis was in the right building in Texas at the exact time he needed to be in order to save a dog's life.
The now-viral video, shared by Mathis on Twitter, shows a woman approaching an elevator with her dog, who was roaming about freely on a retractable leash.
When the elevator arrived on the floor, Mathis exited the elevator and had to go out around the dog.
The fluffy orange pomeranian didn't quite make it onto the elevator with his human before the doors closed, trapping the dog outside the elevator as it began to ascend.
This might not have been so bad, but the retractable leash attaching the dog to his human was caught in the elevator doors.
Mathis, who had glanced at the pupper on the way out of the elevator, turned to see what had happened and leapt into action.
He quickly ran back and started trying to undo the leash clasp and free the startled pup.
He eventually had to place himself between the dog and the elevator, using all of his strength to haul on the leash, to get enough slack to undo the clasp
After freeing the doggo, he picks it up.
Mathis shared a security video of the amazing rescue as well.
Folks were quick to harshly judge the poor pup's human, with many accusing her of being a bad pet parent, but Mathis was quick to shut that down.
He was just thankful to be there to help prevent disaster.
Twitter users were quick to congratulate Mathis on his quick thinking and actions to save the dog.
Some folks shared similar experiences, either as the rescuer or the panicked dog owner.
Mathis spoke with CNN after the video of his daring rescue went viral.
"There was so much fur, that's why it took me a bit to get that lever off of the collar. And when I did, I let go, you could see that leash just shoot off to the top of the elevator."
Sometimes all that stands in the way of a disaster is some quick thinking and decisive action.