What behaviour is this?! The goats trust you to care for them and feed them - then you scare them horribly. Does that make you funny and smart?! What cruel behaviour. You tempt them with food then shock them??? Then put it on youtube calling it funny? Stupid fools.
I can see you love your dog, but pls dont do this. Fun is only fun when both parties enjoy it. Imagine someone doing that to you deliberately?