New pet-sport from Germany -TREIBBALL-

hey folks,
   
greetings from good old germany.
   
Here is somthing new. It´s called TREIBBALL and it´s a new possibillity for workless workingdogs to have some fun.
   
The session starts with eight balls in front of the goal. Sandy, our Border-Collie, pushes all the balls in less than 2 minutes into the goal.
   
Take a look at the video at youtube.
   
Enjoy and have some fun.
   
Ramona, Norbert, Sandy and Diego
   
Heinz Rühmann, a famous german actor said:
   
You can live without dogs, but it makes no sense.
   
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it looks kind of fun, would it not be easier if the balls were a bit smaller, or would that make it too east??