The Little Rock Zoo has announced that some recent newborns are old enough to be on display — four naked mole rats and five bush dogs. According to the zoo, the mole rats, found only in parts of East Africa, organize themselves around a queen, who is the only female mole rat allowed to breed. The queen picks among a variety of choices; if a male not selected tries to breed with her, she typically kills him. Baby naked mole rats are born no larger than the size of a fingernail. Bush dogs, typically found in Central and South America, are relatives of the maned wolf. They look sort of like foxes with short tails and small grizzly bear faces.