This is the best explanation of “Schutzhund (IPO) that I have seen!
It is clear, informative and somewhat entertaining.
IPObservations Episode 1 The Elegance of IPO
IPObservations Episode 2 The German Shepherd Curriculum
E-Dog - 2012 WPBTCA National Championships
The time when screech owls and Bandogges howl and spirits walk and ghosts break up their graves.
Act I, Scene IV of William Shakespeare's "King Henry VI"