alt Hacker Newswhy haven't any animals adapted to this role for humans!
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Plenty of bacteria lives in your guts feeding on your food and generating useful by-products.
How do you know they didn't? When was the last time you just let bugs spend time on you?
There are many Garra rufa subspecies that were the source of compounds used in treating modern autoimmune and skin disorders.
The fishes histories go back thousands of years. As a species it is super interesting... some evolved in hot-spring conditions that would simply cook most other animals. =3
Can we squint and say the gut microbiome is kind of like this?
Lol!
Because there hasn’t been enough time and the ecological niche is non existent… ?
However… upon further inspection, one could argue that the micro biome is full of beneficial micro organisms that have evolved to fill this niche…
[1] Staphylococcus epidermidis
This is one of the most abundant and beneficial bacteria on human skin. It produces antimicrobial peptides and metabolites that inhibit the growth of pathogenic bacteria.
[2] Cutibacterium acnes
Despite its association with acne, this bacterium actually plays an important role in skin health by producing propionic acid, which helps maintain skin pH and prevents overgrowth of harmful organisms.
[3] Corynebacterium species
Various corynebacteria colonize the skin and produce lipases and other enzymes that help break down sebum (skin oils) and maintain healthy skin conditions.
[4] Malassezia species
These yeasts are abundant on skin and help regulate the skin microbiome, though they can sometimes cause issues in excess.
[1] https://en.wikipedia.org/wiki/Staphylococcus_epidermidis
[2] https://en.wikipedia.org/wiki/Cutibacterium_acnes
In a Sense, cats did actually. Not through direct contact, but by getting rid of mice and rats that infiltrate food storage.