A quiet family moment turned into a viral sensation when Tanya, a mum filming a casual video for relatives, captured herself lunging to save her one-year-old son Mark from falling off the sofa. The clip, posted to Instagram, has now racked up over 522,000 views.

Tanya told Newsflare: "My son Mark, who is now one year old. This shows our first serious fall, which I happened to capture by accident. I had set up the camera in advance because I was filming a video for our relatives. I just wanted to record a few minutes of our daily life — and by chance, this fall ended up becoming part of the recorded story of my little boy’s life."

In the video is my son Mark, who is now one year old. This shows our first serious fall, which I happened to capture by accident. I had set up the camera in advance because I was filming a video for our relatives. I just wanted to record a few minutes of our daily life — and by chance, this fall ended up becoming part of the recorded story of my little boy’s life.