Reindeer and elk are related, but they are not the same species. Reindeer, also known as caribou, are a type of deer native to the Arctic regions of North America, Europe, and Asia. They have large, antlered heads and hooves that are adapted to travel on snow and ice. Elk, on the other hand, are a type of deer that live in North America and Asia. They are much larger than reindeer and have larger antlers. Reindeer and elk do share some similarities, such as their similar appearance and diet, but they are distinct species.