The Mysterious *Gigantic* Lions That Used to Roam North America

Go to http://Brilliant.org/SciShow to try their Math History course. The first 200 subscribers get 20% off an annual Premium subscription.

North America used to be home to a cat so large, it may have taken down some of the biggest prey of the last Ice Age.

Hosted by: Hank Green

SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at http://www.scishowtangents.org
----------
Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow
----------
Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever:

Bd_Tmprd, Harrison Mills, Jeffrey Mckishen, James Knight, Christoph Schwanke, Jacob, Matt Curls, Sam Buck, Christopher R Boucher, Eric Jensen, Lehel Kovacs, Adam Brainard, Greg, Ash, Sam Lutfi, Piya Shedden, Scott Satovsky Jr, Charles Southerland, charles george, Alex Hackman, Chris Peters, Kevin Bealer
----------
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:
https://doi.org/10.1002/jmor.10384
https://doi.org/10.1016/j.palaeo.2015.10.039
https://pubmed.ncbi.nlm.nih.gov/23300674/
https://doi.org/10.1073/pnas.1502554112
https://doi.org/10.5194/fr-19-131-2016
https://doi.org/10.5334/oq.24
https://doi.org/10.1016/j.crpv.2017.06.009
https://doi.org/10.1111/j.1365-294X.2009.04134.x
https://doi.org/10.1159/000454705
https://doi.org/10.1038/s41467-020-16502-3
https://doi.org/10.1126/science.aao5987
https://doi.org/10.1016/j.cub.2019.06.059
https://doi.org/10.1111/ecog.03303
https://www.researchgate.net/publication/281544339

Image Sources:
https://commons.wikimedia.org/wiki/File:Panthera_leo_atrox_Sergiodlarosa_1.jpg
https://commons.wikimedia.org/wiki/File:Panthera_atrox.jpg
https://commons.wikimedia.org/wiki/File:Panthera_Atrox.jpg
https://commons.wikimedia.org/wiki/File:Museu_de_Zoologia_da_Universidade_de_S%C3%A3o_Paulo_(May_2018)_19.jpg
https://commons.wikimedia.org/wiki/File:Tiger_in_the_snow_at_the_Detroit_Zoo_March_2008_pic_2.jpg
https://www.istockphoto.com/photo/prehistoric-men-hunting-a-young-mammoth-gm838837372-136570911
https://www.istockphoto.com/photo/portrait-of-beautiful-puma-puma-in-the-dark-american-cougar-gm1161045066-318008194
https://www.istockphoto.com/photo/close-up-view-of-a-walking-jaguar-gm893389228-247134523
https://commons.wikimedia.org/wiki/File:Stamps_of_Ecuador,_2007-11.jpg
https://commons.wikimedia.org/wiki/File:Arctodus_-_Isolated_on_White.jpg Achat1999
https://commons.wikimedia.org/wiki/File:Extinct_monsters_BHL23904492.jpg
https://commons.wikimedia.org/wiki/File:Megatherum_DB.jpg
https://www.storyblocks.com/video/stock/pride-of-lions-resting-on-the-savanna-cam3tpw
https://www.istockphoto.com/photo/prowling-lion-gm168442504-17355138
https://www.istockphoto.com/photo/family-of-lions-with-mother-and-cubs-in-the-grass-of-the-serengeti-gm1151414545-312047009
https://www.istockphoto.com/photo/businessman-looking-shocked-gm625795792-110278733
https://www.storyblocks.com/video/stock/tracking-shot-through-tall-grass-sng7aoaueiz3czusr
https://www.istockphoto.com/sign-in?returnurl=/asset-detail/download-balance-check?url=/vector/world-map-flat-asia-in-center-gm908055162-250176837&is_video=false
https://www.istockphoto.com/photo/portrait-of-a-cougar-mountain-lion-puma-panther-striking-a-pose-on-a-fallen-tree-gm962970452-263022315