Where have all the emus gone? We have about a quarter as many as we did two decades ago, new data shows. Llamas and ostriches plunged even more precipitously. Meanwhile, the bankable animal superstars ...

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It may sound like a joke, but scientists have long been puzzled by how the family of birds that includes African ostriches, Australian emus and cassowaries, New Zealand kiwis and South American rheas ...

Casper, also known as Misty, is a llama-alpaca mix at the Tri-State Zoological Park in Cumberland, Md. (Bonnie Jo Mount/Washington Post) Analysis by Andrew Van Dam Where have all the emus gone? We ...

Ostriches may be ground-bound, but their ancestors could take flight, a new study says The fearsome Australian cassowary, which cannot fly but is sometimes called "the world's most dangerous bird" ...