It's a sad truth that a person's life can be lost in an instant - but the love they leave behind can linger long after they're gone.

This week, 23-year-old Leonardo Valdes was struck and killed by a vehicle while out for a walk with his dog, Doki, near their home in Concepción, Chile. When first responders arrived to the scene, they found Doki there too - still lying by his owner's side, looking visibly heartbroken.

Even after Valdes' remains were covered, Doki refused to budge.