True Facts: The Beaver
3,405,400
Published 2022-06-28
Posters and shirts: ze-true-store.myshopify.com/
Patreon: patreon.com/truefacts
Mike's Video's of Beavers: / @mikesvideosofbeavers
Janet Pesaturo's channel:
youtube.com/c/Ouroneacrefarm133/videos
Thank you to:
Dr. Vanessa Petro, Oregon State Univ.
Dr. Peter Busher, Boston Univ.
Dr. Emily Fairfax, CSU Channel Islands
Dr. Clint Epps, Oregon State Univ.
Dr. Lyle M. Gordon, Northwestern Univ.
Mike Callahan, Beaver Institute
Bob Armstrong “Nature Bob,” Univ. of Alaska
Michael Graydon
Ben Goldfarb, author of “Eager: The Surprising, Secret Life of Beavers and Why They Matter"
James St. John
Julio Lacerda
Thilo Park
Janet Pesaturo,
Winterberry Wildlife
N.Tamura
National Wildlife Research Center, Oregon Field Station
Jak Wonderly
US Forest Service Mendenhall Glacier Web Cam
CC Images:
Beaver Skull Cut: Thilo Parg / Wikimedia Commons CC BY 4.0
commons.wikimedia.org/wiki/File:Schaedel_Biber_Lae…
Palaeocastor fossor and Palaeocastor and burrow in National Museum of Natural History: Claire H. (flickr) CC BY 2.0
en.wikipedia.org/wiki/Palaeocastor#/media/File:Pal…
Palaeocastor BW.jpg: Nobu Tamura CC3.0 Unported
en.wikipedia.org/wiki/Palaeocastor#/media/File:Pal…
Daemonelix burrow James St. John CC-BY 2.0
commons.wikimedia.org/wiki/File:Daemonelix_(fossil…
Additional footage from:
Envato Elements
Shutterstock.com
Pond5.com
Alamy.com
Citations:
Aleksiuk, M. Scent-Mound Communication, Territoriality, and Population Regulation in Beaver (Castor canadensis Kuhl), Journal of Mammalogy, Volume 49, Issue 4, 26 November 1968, Pages 759–762, doi.org/10.2307/1378741
Badyaev, A.V. Beavers: Masters of Downfall. National Wildlife, July 25, 2015.
Brazier, R.E., Puttock, A., Graham, H.A., Auster, R.E., Davies, K.H., Brown, C.M.L. Beaver: Nature's ecosystem engineers. WIREs Water. 2021; 8:e1494. doi.org/10.1002/wat2.1494
Buech, R. R. (1984). Ontogeny and Diurnal Cycle of Fecal Reingestion in the North American Beaver (Castor canadensis). Journal of Mammalogy, 65(2), 347–350. doi.org/10.2307/1381180
Gordon L.M., Cohen M.J., MacRenaris K.W., Pasteris J.D., Seda T., Joester D. Dental materials. Amorphous intergranular phases control the properties of rodent tooth enamel. Science. 2015 Feb 13;347(6223):746-50. doi: 10.1126/science.1258950. PMID: 25678658.
Halicioglu K, Celikoglu M, Buyuk SK, Sekerci AE, Ucar FI, Yavuz I. Three-dimensional evaluation of the mandibular third molars' development in unilateral crossbite patients: A cone beam computed tomography study. Eur J Dent. 2014 Jul;8(3):389-394. doi: 10.4103/1305-7456.137653. PMID: 25202221; PMCID: PMC4144139.
Pop-Ciutrila, Ioana-Sofia & Ghinea, Razvan Ionut & Colosi, Horațiu & Ruiz-López, Javier & Pérez Gómez, María del Mar & Paravina, Rade & Dudea, Diana. (2021). Color compatibility between dental structures and three different types of ceramic systems. BMC Oral Health. 21. 10.1186/s12903-021-01404-7.
Morris, P.J.R., Cox, P.G. & Cobb, S.N.F. The biomechanical significance of the elongated rodent incisor root in the mandible during incision. Sci Rep 12, 3819 (2022). doi.org/10.1038/s41598-022-07779-z
Mott C.L., Bloomquist, C.K., and Nielsen, C.K. Seasonal, diel, and ontogenetic patterns of within-den behavior in beavers (Castor canadensis),Mammalian Biology, Volume 76, Issue 4, 2011,Pages 436-444, ISSN 1616-5047, doi.org/10.1016/j.mambio.2010.09.002.
Muller, G. and Watling, J. (2016) The engineering in beaver dams. River Flow 2016: Eighth International Conference on Fluvial Hydraulics, , Saint Louis, United States. 12 - 15 Jul 2016. 7 pp.
Patenaude, F. and Bovet, J.. Self-grooming and social grooming in the North American beaver, Castor canadensis. Canadian Journal of Zoology. 62(9): 1872-1878. doi.org/10.1139/z84-273
Richard, P.B. Le déterminisme de la construction des barrages chez le Castor du Rhône. Revue d’Ecologie, Terre et Vie, Société nationale de protection de la nature, 1967, pp.339-470. hal-03531683
Rosell, F., Bergan, F. & Parker, H. Scent-Marking in the Eurasian Beaver (Castor fiber) as a Means of Territory Defense. J Chem Ecol 24, 207–219 (1998). doi.org/10.1023/A:1022524223435
Stefen, C., Habersetzer, J., and Witzel, U. Biomechanical aspects of incisor action of beavers ( Castor fiber L.) , Journal of Mammalogy, Volume 97, Issue 2, 23 March 2016, Pages 619–630, doi.org/10.1093/jmammal/gyv209
Wilsson, L. Observations and Experiments on the Ethology of the European Beaver (Castor Fiber L.). Swedish Wildlife, Published by Swedish Sportsmen’s Association Vol. 8 Number 3.
All Comments (21)
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Check out Curiosity Stream with code: ZEFRANK : www.curiositystream.com/zefrank
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“Not only do beavers have to chew the crap out of their food, they have to chew the food out of their crap.” I’m done! That’s the best line ever!
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Zefrank's mom must have lived quite a life. She always has such specific advice.
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The part about the young horse not being “that healthy, it’s flesh is missing” absolutely broke me 🤣
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I think that "It's cozy in their butt. Sorry— it's cozy in there, but..." Might be my favorite running joke on the channel. Like it's all brilliantly written, but that just gets an involuntary cackle out of me every single time.
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I'm a biologist and former zookeeper and I always share True Facts videos with anyone curious about animals and the natural world because it's hilarious, well researched, factually correct and Ze Frank delivers these perfectly. Also, shoutout to Jerry!
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“The hardest thing our body makes — hush now.” Perfect delivery with that one. Thanks for yet another entertaining and educational video!
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That baby beaver yawn was so adorable. I have decided I quite like beavers.
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"But when, how does the beaver and why does it beave?" Has become my immediate reaction every time I hear beaver. Sometimes I forget the word is funny to people for other reasons
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“And their first lodges are like the first apartment that kids get after college… You know there is a lava lamp a futon and a half eaten bagel, and the futon is so gross you choose to sit on the bagel, and he’s all like ‘where’s my bagel’ and then you’ve got explaining to do” Truly a masterful quote
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4:10 Random Fun Fact: Ever heard of the saying, "Don't look a gift horse in the mouth!"? It's because you can tell their age by their teeth and when horses were given as gifts, if the recipient checked the teeth it was deemed as rude because it's a gift so it shouldn't matter how old the horse is.
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"the hardest thing our bodies make...shush now" 😂
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I'm 72 and have been watching animal documentary all my life. I have learned so much from your videos that no one else bothers to tell. So many things I've wondered about that you have answered. Your sense of humour keeps me watching. Keep it up. Your genius.
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They’ve actually reintroduced beavers into parts of Essex here in the UK and now there are wild beavers as they mated. They’ve done more to help with flooding in the few years they’ve been there than the local council has in years.
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I saw a tweet once that said “Do beavers see a river running and just think ‘ABSOLUTELY NOT’” 😂 And learning that they want to stop the sound of running water, I now have confirmation.
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Just got to take a second and put all humor aside: I think zefrank has done more to educate people about animals than most textbooks. It is like tricking your brain into wanting to learn more rather than getting tired of it. Freaking genius.
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I always loved nature shows, but hated how they would make me fall asleep. These are a form of perfection.
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I wish you talked about the Beaver wars. When two separate packs meet, they slap their tails like a war cry. They go at each other terrifyingly. tales-tails. My bad lol
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"How does a beaver, and why does it beave?" has to be the best line written. Ever.
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I first came upon the trapped skeleton of a beaver in the Canadian wilderness in 1973. The trap was chained near the base of a tree and was old and rusted, and the head of the skeleton had these two MASSIVE teeth growing all the way back into the skull, and parts of them were orange-tinted. Both cool and a little strange for a twelve-year-old kid from the Illinois suburbs.
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