Uploaded June 2023 | Updated September 2026, 4 hours ago

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You might think you know why the platypus is a bizarre beast. Maybe you know that it lays eggs, that the males have venomous spurs on their ankles, and that it can sense electricity with its bill. But do you know the most bizarre thing about its anatomy: what major organ is the platypus missing?

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Sources:
animaldiversity.org/accounts/Ornithorhynchus_anatinus
amnh.org/explore/news-blogs/news-posts/to-hunt-the-platypus-uses-its-electric-sixth-sense
pubmed.ncbi.nlm.nih.gov/23187861
sciencealert.com/the-australian-platypus-is-the-latest-mammal-discovered-with-fluorescent-fur
https://blog.csiro.au/fighting-superbugs-with-platypus-milk-and-shirley-temple/
scripts.iucr.org/cgi-bin/paper?S2053230X17017708
https://www.wwf.org.au/news/blogs/8-interesting-platypus-facts
ncbi.nlm.nih.gov/pmc/articles/PMC2441467
nationalgeographic.com/science/article/how-the-platypus-and-a-quarter-of-fishes-lost-their-stomachs
smithsonianmag.com/smart-news/many-animals-including-the-platypus-lost-their-stomachs-180948103
livescience.com/41661-why-platypus-wont-regain-stomach.html
natsca.org/sites/default/files/publications/JoNSC-Vol9-Ashby_2021.pdf

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Images:
gettyimages.com/detail/1471499729
https://www.si.edu/object/ornithorhynchus-anatinus:nmnhvz_7592991
gettyimages.com/detail/photo/ornithorhynchus-anatinus-man-showing-venomous-spur-royalty-free-image/1215345040
gettyimages.com/detail/675082036
gettyimages.com/detail/1368911984
gettyimages.com/detail/1311051529
gettyimages.com/detail/1147559962
gettyimages.com/detail/658344164
gettyimages.com/detail/963355346
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gettyimages.com/detail/1199103712
gettyimages.com/detail/963355512
gettyimages.com/detail/1050362810
gettyimages.com/detail/1270640473
inaturalist.org/observations/69896504
gettyimages.com/detail/1214353261
gettyimages.com/detail/943417632
gettyimages.com/detail/1319588835
youtube.com/watch?v=S9ye2evdaWI
facebook.com/watch/?v=615669313058425
gettyimages.com/detail/1208332730
gettyimages.com/detail/964208500
gettyimages.com/detail/1426057558
gettyimages.com/detail/1197061406
gettyimages.com/detail/1197061406
gettyimages.com/detail/1225366132
gettyimages.com/detail/1436274192
journals.iucr.org/f/issues/2018/01/00/cb5104/index.html
youtu.be/dHocViqKbbc
gettyimages.com/detail/1220729124
gettyimages.com/detail/1285046035
archive.org/details/cyclopdiaofana03todd
gettyimages.com/detail/963355808
gettyimages.com/detail/1428216765
gettyimages.com/detail/963355630
gettyimages.com/detail/472735781
inaturalist.org/observations/137087784
gettyimages.com/detail/679724798
gettyimages.com/detail/1471964685
gettyimages.com/detail/1477727705
gettyimages.com/detail/1477727705
youtube.com/watch?v=n9I2O1geyLU
gettyimages.com/detail/473390277
gettyimages.com/detail/1368911984
gettyimages.com/detail/1471499729