BioLogic

Evolution keeps turning mammalian ancestors into anteaters!

While teaching mammalian classification to my students I was intrigued by the thought that why there are so many types of mammals belonging to different mammalian orders, specialized in eating ants/insects! The answer is finally here and its official...

In a fascinating twist of evolutionary biology, scientists have discovered that mammals have independently evolved into anteaters at least 12 times since the extinction of the dinosaurs.

According to a new study published in Science, the distinctive features of ant-eating animals—long snouts, powerful digging claws, and sticky tongues—have appeared again and again across unrelated mammal lineages.

Anteaters, aardvarks, and pangolins didn’t inherit this lifestyle from a common ancestor; instead, evolution repeatedly arrived at the same solution to one inescapable challenge: ants and termites dominate the planet.

These social insects are among the most abundant and biomass-rich organisms on Earth. In many ecosystems, ants and termites outweigh all other animals combined, and termites alone outmass wild mammals by a factor of ten globally. This ecological dominance has driven convergent evolution—where unrelated species develop similar traits to adapt to similar environmental pressures. As long as ants and termites thrive, evolution appears bound to keep reinventing the anteater blueprint, making it one of nature’s most enduring designs.

Source: Buehler, Jake. “‘Things Keep Evolving into Anteaters.’ Odd Animals Arose at Least 12 Separate Times.” Science, 25 July 2025