The Unique Reason Reindeer Change Their Eye Color

By : SciShow - 1 month ago
Plenty of animal eyes "glow" in the dark, but only one species has eyes that change color with the seasons.

Hosted by: Olivia Gordon

Head to https://scishowfinds.com/ for hand selected artifacts of the universe!
----------
Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow
----------
Dooblydoo thanks go to the following Patreon supporters: Jerry Perez, Lazarus G, Sam Lutfi, Kevin Knupp, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali. Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz
----------
Looking for SciShow elsewhere on the internet?
Facebook: http://www.facebook.com/scishow
Twitter: http://www.twitter.com/scishow
Tumblr: http://scishow.tumblr.com
Instagram: http://instagram.com/thescishow
----------
Sources:
http://rspb.royalsocietypublishing.org/content/280/1773/20132451
https://munin.uit.no/bitstream/handle/10037/2610/thesis.pdf?sequence=2
https://bmcophthalmol.biomedcentral.com/articles/10.1186/1471-2415-12-53
----------
Images:
https://commons.wikimedia.org/wiki/File:TapetumLucidum.JPG
https://www.istockphoto.com/vector/eye-anatomy-diagram-illustration-gm611325022-105192369
https://commons.wikimedia.org/wiki/File:Villrein.JPG
https://commons.wikimedia.org/wiki/File:Reinbukken_p%C3%A5_frisk_gr%C3%B8nt_beite._-_panoramio.jpg
http://rspb.royalsocietypublishing.org/content/280/1773/20132451
https://www.istockphoto.com/photo/cute-baby-reindeer-gm579231234-99600381

The Unique Reason Reindeer Change Their Eye Color