Well… I tamed a dog… then opened my door to admire my copper golem and that heartless mutt of a monster just sacked my poor innocent golem in a most vicious way.
LoL.
I unfortunately don't have a screenshot.
I believe the golem was simply considered a hostile mob by the tamed wolf.
If iit's part of the game design… then I have to work around it.
Could it be, that you accidentally hit the copper golem? Your dog will attack anything that you hit first or that hits you. What also count as a hit is when you hit the golem with your fist, a block etc.