The Unique Reason Reindeer Change Their Eye Color

Plenty of animal eyes glow in the dark, but only one species has eyes that change color with the seasons. Hosted by: Olivia Gordon SciShow has a spinoff podcast It s called SciShow Tangents. Check it out at Head to for hand selected artifacts of the universe Support SciShow by becoming a patron on Patreon: 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 TerrioCameron, Viraansh Bhanushali. Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz Looking for SciShow elsewhere on the internet Facebook: Twitter: Tumblr: Instagram: Sources: Images: