The Guam kingfisher, or Sihek in CHamoru, is an iconic species of Guam, but can no longer be found there. Pictured here are Hinanao and his mate, Tutuhan, who came from the Cincinnati Zoo & Botanical ...

The Christmas Island shrew, a species of cone snail (Conus lugubris), the slender-billed curlew, and three Australian mammals ...

CINCINNATI (WKRC) - A rare Sihek chick has hatched at the Cincinnati Zoo. The Cincinnati Zoo is one of about two dozen facilities working to rebuild the population of this bird that had been extinct ...

Critter spotters are feline good about this one. Biologists were flabbergasted when an elusive animal thought to be extinct ...

CINCINNATI (WKRC) - Birds that had been designated extinct in the wild are now laying eggs on an island in the Pacific and the Cincinnati Zoo played a big role. The Guam Kingfisher (also known as the ...

PRAGUE (AP) — The Prague Zoo has joined an international effort to ensure the survival of a rare insect that had been considered extinct for more than 80 years. The zoo is among six institutions ...

FARGO — The Red River Zoo has welcomed two rare additions — a pair of Przewalski’s horses, once extinct in the wild and now classified as endangered. The two male horses are not part of a breeding ...

PHOENIX — Once thought to be near extinction, an antelope from the Middle East has resurfaced again at the Phoenix Zoo. The Arabian Oryx calf, a species of antelope that was declared extinct from its ...

MELBOURNE, Australia -- Almost 100 years after its extinction, the Tasmanian tiger may live once again. Scientists want to resurrect the striped carnivorous marsupial, officially known as a thylacine, ...

Image via Getty Images An animal long deemed to possibly be extinct has reappeared after nearly three decades. Scientists in ...

Five chicks of the critically endangered Brazilian merganser have been born at the Prague Zoo, fuelling hopes for a reintroduction of the duck in the wild, a breeder said Wednesday. The two males and ...