Yes, caribou and reindeer are the same species. They are both members of the deer family and have similar physical characteristics. Caribou are native to North America and can be found in Canada, Alaska, and parts of the northern United States. Reindeer, on the other hand, are native to the Arctic regions and are known for their association with the Christmas season. Both caribou and reindeer are known for their impressive antlers and their ability to survive in harsh, cold climates.