If you spawn more than one wolf and spawn an enemy that attacks them, I recommend Johnny Vindicator. If the wolves win, they all remain hostile and keep jumping at the target even when he is dead. If i spawn another Johnny Vindicator and he attacks a wolf, all the other wolves don't target him.

The same happens with any entity that hurts wolves.

Steps to reproduce
1. Spawn more than one wolf.
2. Spawn a Johnny Vindicator.
3. When the wolves win, spawn another Johnny Vindicator.