Dressage mare Blue Hors Matine, whose dressage freestyle at the 2006 World Equestrian Games in Aachen became an Internet video sensation, was euthanized today after breaking a leg in a paddock accident, Horse and Hound reported.

The 13-year-old Dutch mare was ridden by Andreas Helgstrand. She was retired from competition following a tendon injury at the Las Vegas World Cup in 2007.

Blue Hors Stud Director Esben Moller said in a statement Matine broke her right forelimb at the knee while out in her pasture.

The YouTube video of her 2006 WEG freestyle has received nearly 10 million views.