In it, he shares the story of a Rottweiler named Whisky, who was given 24 hours to live.

But after making 1 simple change, Whisky went on to live for years after that.

Now, while Whisky’s remarkable turnaround at the hands of Dr. Marty is not typical, many viewers were still left in shock at his story. Matter of fact, this video has since gone viral.

And that makes a ton of sense. Because in addition to sharing the Rottweiler’s incredible transformation, this video also reveals the 1 simple, do-it-at-home method thousands of people are now using to enhance their dogs’ lives.

This new canine care technique is so simple that you can do it in less than 90 seconds, and yet, it could help your dog lead the longest, healthiest life possible — no matter their age.

Over the course of his 45-year-long career, Dr. Marty has treated countless animals and been at the forefront of veterinary advancement for years, but believes this to be his most important discovery to date.