Well done sabrina. I'm with you - that's how our dogs should be trained if we are going to run them loose in the countryside - or anywhere outside our own well-fenced grounds, come to that.
In once had to call my (entire) dog off a bitch he was mounting. I did it; the bitch's owner, much relieved but very surprised, said, "My goodness, that was like the voice of DOOM!"

That same dog could not be called off geese on a lake

- nor the deer in Richmond Park.

I did feel for that guy in the vid - I have been there and was so thankful (a) no deer nor dog ran across a road and (b) no-one had video cameras with them in those days!
