10 Things You Didn’t Know About Naked Mole-rats | Smithsonian’s National Zoo and Conservation Biology Institute https://nationalzoo.si.edu/animals/news/10-things-you-didnt-know-about-naked-mole-rats
If you think a blind, nearly hairless rodent that lives underground can’t get much stranger, then buckle up. There’s a lot more to these weird (and wonderful) rodents than meets the eye!
If a predator tries to enter a tunnel, “soldier” mole-rats pile up to block the entrance