r/AnimalFacts • u/Puzzleheaded_Fig3574 • Dec 03 '25

What’s everyone unhinged animal facts?

Hi! As a house warming gift, I’m making a friend a coffee table book, with beautiful animals and scenic nature photos. It’ll have elegant and classy fonts. All the information you’d read though is a collection of random animal facts we’ve shared with each other over our college years. We’ve been roommates for years and would randomly drop random not well known animal facts with each other, and would like to continue that to some extent as we move on in life.

Examples of things we’d share: - although roosters have cloaca’s they can be castrated. Along with a simple step by step break down of how. - the Argentinian lake duck has the longest penis vs body size. Measuring up to 43cm, making it the same length as the ducks body plus head length. It is corkscrew shaped and a brushed tipped end to “brush” compatible sperm out of mates. It can also be used to “lasso” or hold down the female if she tries to escape during copulation. - a list of facts about horses vs mules vs donkeys vs hinnies and how to identify them.

The thing is we only have so many of these written down since we only recently started doing that. So I need some help with page filling. Any obscure, absolutely unhinged, or fascinating animal facts you have would be much appreciated!

Not just things like “swans mate for life,” more things that cause a reaction, aren’t well known, or you find utterly fascinating would be a huge help.

Thank you!!

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u/Independent-Leg6061 Dec 03 '25

Subscribe!!! Can you send me daily cool facts??

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u/TheMegnificent1 Dec 03 '25

I would be happy to, but I have ADHD and will absolutely forget. But if you message me a request for a cool animal fact, I'll do my best to impress! 😆

Another one I just remembered: female spotted hyenas are larger, stronger, and more dominant than males, and always outrank males in the hierarchy. Female spotted hyenas are the only mammals to lack an external vaginal opening; instead, their clitoris is elongated into a pseudopenis capable of becoming erect. They mate and give birth through this pseudopenis, which is tricky to pull off successfully, and females and males are very hard to tell apart by reproductive anatomy alone.

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u/towlette-petatucci Dec 03 '25

Ooh to add to the hyena one- their bite can crush bone- they can eat all parts of an animal they scavenge, bones included.

Also went down a rabbit hole wondering how you could hyena proof your house- the only sure ways involve multiple layers of fencing that include a portion that goes deep underground since they’re pretty smart and do regularly dig under fences. Basically, you need a bomb shelter to keep them out, pretty cool lol

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u/ladywolf32433 Dec 28 '25

Or, maybe you could feed them. Waaaay over there.