Help, I’ve Lost My Butt!

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It feels like for an animal, having one's butt fall off would be pretty bad. But apparently that's not always the worst thing to happen, at least not for these specific animals.

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Sources:

https://www.journals.uchicago.edu/doi/10.1086/712759
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www.gettyimages.com
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https://commons.wikimedia.org/wiki/File:Ananteris_balzanii_adult_male.jpg
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https://commons.wikimedia.org/wiki/File:Pycnogonum_littorale_(YPM_IZ_030249).jpeg
https://commons.wikimedia.org/wiki/File:Mnemiopsis_leidyi_larvae.png
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https://commons.wikimedia.org/wiki/File:9701Wounded_common_house_lizard_with_fresh_blood_and_tail_lost_due_to_autotomy_29.jpg

Видео Help, I’ve Lost My Butt! канала SciShow