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Scientists Think They Know Why Vampire Bats Survive on Blood
Vampire bats are the only mammals that can survive on a diet of just blood. In a study published on March 25, 2022, scientists have figured out the reason why — 13 genes are missing or no longer work in vampire bats, unlike in the genomes of 26 other bat species where the genes are still working. Those gene tweaks helped them adapt to a blood diet rich in iron and protein but with minimal fats or carbohydrates.
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