logoalt Hacker News

Why it takes you and an elephant the same amount of time to poop (2017)

67 pointsby Tomteyesterday at 8:19 PM61 commentsview on HN

Comments

conductryesterday at 8:55 PM

I spent a lot of time in hospitals and got a lot of exposure to everything they do in my early adulthood, a few smells are permanently burnt into my brain including the smell of the GI wing.

Fast forward a couple decades, and my dilemma right now is a coworker that I share a restroom with. It’s a low traffic restroom so I have seen and know it’s coming from him, but he has some serious GI issues. Likely he’s digesting blood from my memory of the ailments. And so the dilemma is, do I say something to him? He looks like he is in awful health and high probability with an awful diet (based on profiling him). But I don’t interact with him or have any type of relationship and saying something would be incredibly awkward. Surely he knows I tell myself.

show 21 replies
layman51yesterday at 8:45 PM

This reminds me of a news story from many years ago about a research study that won the Ig Nobel Prize. The research study was about how almost all mammals weighing over 3 kg take just about the same amount of time to empty their bladders when urinating.

show 2 replies
TheAceOfHeartsyesterday at 8:53 PM

Since we're on the subject of waste removal, most mammals also pee for roughly the same amount of time [0], around 20 seconds. If you look up a video of an elephant urinating, it's quite the spectacle and the flow is voluminous.

[0] https://www.nationalgeographic.com/animals/article/mammals-p...

show 2 replies
Gualdrapoyesterday at 8:42 PM

Elephants should do it quicker as they don't do doomscroll when pooping, though

anigbrowlyesterday at 8:50 PM

Why would you expect anything else? It's also easier for larger people to pick up heavier weights, larger bullets to make larger holes, etc. etc. Of course larger animals are going to have larger muscles in their digestive tracts in approximate proportion to everything else about them being larger.

show 2 replies
Smalltalker-80yesterday at 8:47 PM

Mostly solid scientific work, this ;)

vezuchyyyesterday at 9:01 PM

Are you trying to say that an elephant with a phone will need 15 minutes as well?

show 1 reply
smusamashahyesterday at 10:20 PM

This reminds of a research that mammals take same amount of time to pee and it was 40 something seconds.

michaelbuckbeeyesterday at 8:34 PM

Read to the end of the article to learn about NASA's Space Poop challenge and the award winning astronaut diaper the author created.

show 1 reply
Reason077yesterday at 9:05 PM

> "elephant feces have a volume of 20 liters, nearly a thousand times more than a dog's, at 10 milliliters"

Surely this depends greatly on the size of the dog. I've seen dog poops that are far bigger than that. That 10 ml poop must be from a very small dog!

danilocesaryesterday at 9:03 PM

Are elephants addicted to social media too?

anongooseyyesterday at 9:07 PM

Something about this with urination too right? Like almost every animal takes the same amount of time?

show 1 reply
gweinbergyesterday at 11:26 PM

So the reason it takes a human and an elephant about the same amount of time to poop is, the ratio of our poop lengths is about the same as the ratio of our poop velocity? That sounds more like a tautology than an explanation to me.

lo_zamoyskiyesterday at 10:12 PM

I was expecting something about Bernoulli's principle.

larodiyesterday at 8:51 PM

doodie.com was cool back in the day

Simulacrayesterday at 8:56 PM

But I'm on the clock so..of course I take longer.

alex1138yesterday at 8:45 PM

Thanks Hacker News

chasingyesterday at 9:24 PM

Poop like an elephant, pee like a bee.

rwcyesterday at 8:51 PM

I mean, I don’t know what I was expecting but I clicked anyway…

gvldevyesterday at 9:13 PM

The article says "elephant feces have a volume of 20 liters, nearly a thousand times more than a dog's, at 10 milliliters." Is 10K nearly 20K?

Regardless, modern dog breeds vary in size wildly, and I'm curious how they standardize the average fecal volume across the sizes. My dogs are most certainly not expelling just 10 milliliters... I can't imagine that number is even accurate for small dogs.