* Wolves: Wolves are the main predator of reindeer, but they typically target young, sick, or weak individuals.
* Polar Bears: While polar bears are found in the Arctic, their primary prey is seals. They may occasionally prey on reindeer, but it's not common.
* Brown Bears: Brown bears also inhabit some tundra regions, but they prefer berries and fish. They may occasionally hunt reindeer, but it's not their primary food source.
So, while there are some predators that may eat reindeer occasionally, they are not a major threat to the reindeer population.