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 (Heterocephalus glaber) in the Toronto Zoo.
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.
More naked mole-rats in the Toronto Zoo.
This picture was taken on a different day when a different set of naked mole-rats were on duty.
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.
Further Readings:
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:
Scientists discover how naked mole rats stay cancer-free
I like this one: Scientists have figured out why naked mole rats don’t get cancer