We used to own a goat....Woody...he used to play with our black lab. He used to get really riled up and would start jumping up and down and spinning in circles, and then he would lower his head and charge at you (yes, he had horns)...but just before he hit you, he would slow down and just bump against us, and then he would start to push.
If you bopped him on the head between his horns, he knew that was time to play, and the push-of-war would begin.
The dog eventually grew to not like him much (he was big) and the dog would run away, and the goat would follow, and once they were like a mile away, the dog would run home and leave the goat in somebody's yard...but Woody had a collar and a tag, so we'd get a call and have to go pick him up.
He also used to eat the wood siding off the house...so eventually my dad gave him away to a farm that raised racing horse (because apparently goat have a calming effect on race horses, or so I was told...)
<Thus concludes krellin's entire knowledge of goats...>