When wild wolves are attacked, any other wild wolf plus that one targets the attacker. Well this happens with tamed wolves. If something attacks a tame wolf, any tame wolf with the same owner will attack it. Well, what if something attacks a wild wolf with only tamed ones around? Well, the tamed wolves attack!
What I expected to happen was...:
When a wild wolf is attacked, the tamed one does not chip in.
What actually happened was...:
The tame wolf did actually attack.
Steps to Reproduce:
1. summon a snow golem and make it accidentally attack the wild wolf.
2. Have a tamed wolf near by
3. the tamed wolf will come attack the snowman even though it hit the wild one.
Oh, and by the way, this does not happen if a player attacks the wild wolf and the tame wolf near by belongs to the attacking player. I don't know if it happens with players at all, since I'm on single player, but as soon as I have someone for multiplayer I will report what happened.