In the Final Seconds of This Ad About a Dog, It Will Become Very Clear Why It's Going Viral

It's been views more than 3.3 million times.

The two-minute spot, created by Thai bank Kiatnakin, follows a dog's determination to pay back a stranger for providing him food. It shows a series of scenes where the dog enthusiastically guards the man's vehicle.

However, it's the final scene that brings everything together (we won't' spoil it for you).

Kiatnakin Bank said in the video's YouTube description that the ad is meant to highlight the unexpected returns of investing.

"Investments appears to be an ordinary savings, but actually returns have exceeded expectations," it said, according to a Google translation.

Several commercials form Thailand have gone viral recently. A World War-II themed ad from TrueMove amassed millions of views in earlier this month. That company's "Giving" ad also went viral.

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