I saw this moving video on Facebook and searched for it on YouTube. As well as this edited version I found an unedited version that shows how hard the dog had to work to win the child’s affection:
The video was uploaded by Ana, the child’s mother. The child’s name is Hernan and the dog is Himalaya. Hernan was three at the time. Understandably, the video went viral and, two years later, the Daily Mail ran an article on it.