The big and quick icicles summoned by the ice golem gave not just a considerable damage, but it was a great damage that is big enough that there are only 3 out of 14 winter wolves survived from that attack.
Even though they have a huge body that is much more threatening than other wolf-type magic beasts, that huge body of theirs made it easier for the ice golem to aim at them.
After looking at the sight of their brethren getting killed in such a horrible way, the three winter wolves got blinded by rage and went straight toward the ice golem to avenge their brethren.
Just like other wolves that are considered as highly social animals, they cared a lot about their brethren and the member of their pack. They nurture the sick and the injured, and made a complex communication and social structure to maintain the pack.
