The Grey Wolves are current species, but they already existed in the Pleistocene Epoch. Homo Sapiens used them as hunters to help them to catch prey.
In the second episod ofPrehistoric Park , a group of gray wolves attacked Martha the mammoth, but Nigel drove them away.
A grey wolf was also seen in the beginning of the final episode of Walking With Beasts, A Mammoth Journey, watching the mammoth herd.