Alpha (2018)
It's set in the 20000 BC Europe in the last ice age. Keda is the tribe leader's son, but he is too "weak", because he couldn't get himself to kill.
It's an incredible film, great acting, both human and canine, incredible cinematography, and they created a new language for the film based on what we know about the people living in that age. I recommend watching it (there are some animals dying in the beginning, but the movie is worth it)
I try not to spoil too much. In short, on one hunt Keda almost dies, and he tries getting back home, during which he forms a bond with a wolf.
--Spoiler alert--
After Alpha (the female wolf) helps Keda get out of the freezing water under the ice, they cuddle next to a fireplace, with Keda being almost naked. I would like a zooey scene there.