Is Yakul from Princess Mononoke an Elk or an Ibex?

This is an elk http://www.huntingnet.com/ftb_images/Elk/rocky%20mtn%20elk.jpg This is an Ibex http://www.biosphere-expeditions.org/images/stories/altai/ibex2.jpg http://www.gvzoo.com/files/u2/Ibex.jpg This is Yakul , the Red Elk from Princess Mononoke http://www.onlineghibli.com/mononoke_hime/newimages/Yakul.jpg... show more This is an elk http://www.huntingnet.com/ftb_images/Elk/rocky%20mtn%20elk.jpg
This is an Ibex http://www.biosphere-expeditions.org/images/stories/altai/ibex2.jpg
http://www.gvzoo.com/files/u2/Ibex.jpg
This is Yakul , the Red Elk from Princess Mononoke http://www.onlineghibli.com/mononoke_hime/newimages/Yakul.jpg
I love this movie dearly, and Yakul is my favorite character, but they drew him as an Ibex and called him a red elk.
So did the animators draw wrong?
Was there a mis-translatin?
Are there really red elk in Japan?
Help!
http://www.animationartist.com/movies/mononoke/Artists/Hayao/YakulPoem/AshitakaDeer01.jpg
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