У вашего броузера проблема в совместимости с HTML5
This short film was made as part of a day recreating access scenarios, BHS was asked to bring loose dogs for filming purposes, so while the words and most of the filming are correct in respect of responsible access, the pictures with the loose dogs give a very bad impression of responsible access. Dogs must be kept under close control at all times, It is almost impossible to do this from horseback no matter how good your dog is, so BHS recommends you don't take your dog riding unless you can control it and that you only take your dog while on your own land.