This heartwarming video of a dog performing CPR on a 'collapsed' police officer is the best thing you'll see all day!

This is hands down one of the cutest videos we have EVER seen!

In the clip - which was filmed by the Madrid police - a police officer can be seen dramatically falling to the ground before lying perfectly still.

But not for long.

As a tiny pooch, named Poncho, runs over to his fallen comrade wearing a flashing police light and tries to save the life of the officer by performing CPR.

The Madrid police uploaded the video to their Twitter feed with the caption: '"Heroic" performance of our #4pawedcompanion Poncho, who did not hesitate for a moment to "save the life" of the agent, practising the #CPR in a masterful way.

The clip has since gone viral on Twitter, racking up nearly 1.7million views since being uploaded three days ago.

AWWWWWWWWWWW!