Naked mole-rats are unusual mammals since they form a colony that would be more befitting of ants, or bees or similar colony insects. Just like colony insects naked mole-rats have a queen who produces all the pups, and workers who don’t breed just dig the tunnels, gather food, take care of the young, etc.
Naked mole-rats are not particularly beautiful creatures, and I do not seem to be able to take a decent photo of them. In zoos naked mole-rats are kept in some acrylic boxes to simulate their underground burrows, which the naked mole-rats tend to scratch in an attempt to dig, and render them not fully transparent.
Naked mole-rats can live very long for a rodent (over 30 years), and apparently naked mole-rats never get cancer which got researchers all excited.
Naked mole-rat article on Wikipedia
Naked Mole Rat Named “Vertebrate of the Year”
Scientists discover gene that ‘cancer-proofs’ rodent’s cells
Genetic information at naked-mole-rat.org
Some lighter material: