A dog has gone viral on social media after being filmed riding a jet ski while its owner followed behind on a hoverboard.

Two-time Olympic champion Marcel Hirscher announced on Friday that he is pulling out of the rest of the season, including the upcoming Winter Olympics, citing a lack of form.

Lindsey Vonn, 41, returned to the top of downhill skiing with a stunning World Cup victory on Friday, her first in nearly eight years and the first since her comeback with titanium implants in her right knee following a five-year retirement.