Naked mole-rats invade neighboring colonies and steal babies
When the burrow is king, it may pay to be part of a huge, aggressive army
![Naked mole-rats in a pile](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2020/10/101620_jb_molerats_feat.jpg?fit=1028%2C579&ssl=1)
Naked mole-rats (Heterocephalus glaber) form a cozy pile. The burrowing rodents are native to East Africa and have a predilection for making war.
Ger Bosma/Alamy Stock Photo