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Which animal has saved the most human lives? (In the last 70+ years) (Original Post) underpants May 2025 OP
ANSWER underpants May 2025 #1
Bats lapfog_1 May 2025 #2
Good point but not the answer here underpants May 2025 #6
I remember seeing a video about this several years ago EYESORE 9001 May 2025 #11
Maybe, but probably not to the extent that urban legend has it. sl8 May 2025 #10
Fascinating! I was kind of thinking of it in the opposite way - saving lives by Tadpole Raisin May 2025 #8
I thought it was Lassie, but hats off to the scientists and to the bats. surfered May 2025 #3
What about Flipper? Omnipresent May 2025 #5
I was thinking of... 2naSalit May 2025 #4
Face eating leopards...... magicarpet May 2025 #7
Bees are animals, and help feed us jgo May 2025 #9
My first guess was dogs then mice - medical/science tests underpants May 2025 #13
Not bears. Ocelot II May 2025 #12
😳 underpants May 2025 #14
Lab mice. Itchinjim May 2025 #15
That and dogs were my first guess. underpants May 2025 #16
Horseshoe crabs Ritabert May 2025 #17
Thanks for the interesting thread, underpants! EuterpeThelo May 2025 #18
Dogs horses and mice were the three I thought of underpants May 2025 #19
Cats jmowreader May 2025 #20

underpants

(191,809 posts)
1. ANSWER
Thu May 1, 2025, 08:39 AM
May 2025
https://www.discoverwildlife.com/animal-facts/marine-animals/which-animal-has-saved-most-human-lives



In the 1950s, scientists isolated from its bright-blue blood a clotting agent, coagulogen, that binds to fungi and endotoxins.

This led to a simple, reliable method for detecting impurities in medical equipment and pharmaceutical drugs.

Oxygenated blood is harvested from the pericardium of wild-caught crabs, which are then returned to the sea.

The product is used to test drugs and medical instruments, saving pretty much anyone who has ever received any medical attention (since the 1950s).

lapfog_1

(31,155 posts)
2. Bats
Thu May 1, 2025, 08:42 AM
May 2025

Bats are considered the most effective predators of mosquitoes. They can consume hundreds of mosquitoes in a single night, significantly reducing mosquito populations.

illness from mosquitoes probably has killed more humans than any other single source

underpants

(191,809 posts)
6. Good point but not the answer here
Thu May 1, 2025, 08:47 AM
May 2025

The award for ‘most lives saved’ must go to the Atlantic horseshoe crab Limulus polyphemus.

EYESORE 9001

(28,646 posts)
11. I remember seeing a video about this several years ago
Thu May 1, 2025, 09:01 AM
May 2025

I’m still not convinced horseshoe crabs aren’t extraterrestrials

sl8

(16,683 posts)
10. Maybe, but probably not to the extent that urban legend has it.
Thu May 1, 2025, 08:56 AM
May 2025

Apparently, much of that reputation stems from inappropriate extrapolation from a study regarding how bats hunted, not how much or which insects. The bats were were contained in a small enclosure with only mosquitos as potential prey. I believe that at least one one study has found that, given a choice of prey, bats tend to prefer insects with more substance (e.g., moths).

There has been at least one recent study that indicates that some bats do eat a lot of mosquitos, but not as much as some of the extravagant claims made in popular media.

https://www.vdci.net/blog/debunking-myths-bats-for-mosquito-control/

Debunking Myths: Bats for Effective Mosquito Control

Tadpole Raisin

(1,889 posts)
8. Fascinating! I was kind of thinking of it in the opposite way - saving lives by
Thu May 1, 2025, 08:55 AM
May 2025

Helping to create life (and food) - bees.

Of course that wouldn’t be enough to sustain settlers in the old days of winter but when/if bees died off we’d be seriously screwed.

So many people don’t get how fragile our system is.

Anyway, big thanks to the crab. I wouldn’t have guessed that.

2naSalit

(97,425 posts)
4. I was thinking of...
Thu May 1, 2025, 08:44 AM
May 2025

A land animal but I used to see them on the beach when I was a kid. Horseshoe crabs. I wish they'd leave them alone. In trashing that species, there will be hell to pay in the ecosystem.

jgo

(996 posts)
9. Bees are animals, and help feed us
Thu May 1, 2025, 08:56 AM
May 2025

From two different websites:

"bees are responsible for a third of the food that we eat. Animals including birds, bats, beetles, and butterflies are all pollinators, transferring pollen between flowers and plants, but the honeybee is the most important pollinator."

"bees are animals. They belong to the kingdom Animalia, specifically within the phylum Arthropoda (insects)."

EuterpeThelo

(70 posts)
18. Thanks for the interesting thread, underpants!
Thu May 1, 2025, 11:45 AM
May 2025

My guess was going to be either horses or dogs. Thinking of the settlers of our country and the Native Americans before them, where would they have been without horses? Dogs, not only in professional capacities like K9s or bomb-sniffing canines but the stories you hear so often about, for example, a person who had a seizure or whatnot and their dog ran to alert someone and bring back help.

I love my cats, but I don't think they'd lift a claw to go and get aid.

underpants

(191,809 posts)
19. Dogs horses and mice were the three I thought of
Thu May 1, 2025, 11:52 AM
May 2025

I heard it on a morning radio show and they picked the same.

jmowreader

(52,565 posts)
20. Cats
Fri May 2, 2025, 07:29 PM
May 2025

Cats eat rodents and cockroaches - two classes of animal that carry and spread disease. Hence, by reducing the population of disease vectors cats have a very beneficial impact on the human population.

They're also cute and cuddly, which helps too.

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