Naked mole-rats, small, hairless rodents native to East Africa, have captured the attention of scientists due to their extraordinary lifespan. In captivity, they can live up to 37 years—far longer than most other rodents of similar size, which usually live only about six years. These animals live in underground colonies that can include as many as 300 individuals. Within these colonies, only one female, known as the queen, and a few males are allowed to reproduce. The rest of the colony members are sterile, but if the queen or her mates are removed, the sterile individuals may compete to take over reproductive roles. This social structure is similar to that of insects like bees and ants, which have a single reproductive individual and a group of non-reproductive workers. The naked mole-rat’s most intriguing biological feature is its apparent resistance to aging. In most mammals, the likelihood of death increases with age, but this pattern does not apply to naked mole-rats. Some females remain fertile well into their 20s, and the reproductive queen can stay fertile for more than 30 years. This challenges a theory of aging known as the "disposable soma" theory, which suggests that the body deteriorates once reproduction is no longer necessary. Unlike most mammals, where larger body size is typically associated with longer lifespans, the naked mole-rat appears to defy this trend, with its queen potentially outliving other members of the colony. In addition to their longevity, naked mole-rats are also highly resistant to cancer. Studies of over 2,000 deceased individuals in captivity have found very few cases of spontaneous cancer. The first recorded cases involved two male workers aged about 20 and 22 years. These animals have also evolved a unique ability to survive in environments with little to no oxygen. They can be revived after being exposed to zero oxygen for 18 minutes by using a fructose transporter called GLUT5. They also show reduced sensitivity to certain types of pain, making them an interesting subject for medical research. Scientists are especially fascinated by the naked mole-rat’s potential for DNA repair. A protein called cGAS functions differently in these animals compared to humans. In humans, this protein contributes to cellular aging, but in naked mole-rats, it appears to enhance the DNA’s ability to repair itself. This difference is attributed to four specific amino acids in the protein. While this mechanism offers promising insights for human aging research, scientists caution that applying this repair process to human cells may be challenging due to the greater complexity of human biology and different evolutionary pressures.