Once the animals mix together, no one can tell them apart. Reindeer and caribou belong to the same species, Rangifer tarandus. Ten years ago, herders on the peninsula owned almost 25,000 reindeer. Today they have only about 9,000. Some have lost every single animal they owned.
Reindeer herders are worried, because there are very few other jobs in the area.
They rely on reindeer meat to feed their families, and they also sell it to stores around Alaska. I'd rather be a reindeer herder than anything else.