By Patrick Healy | The New York Times  The majestic giraffe, the world’s tallest land mammal and a prime attraction at zoos worldwide, is threatened with extinction because of illegal hunting and a loss of its habitat, according to a report published on Thursday by an international monitoring group. The giraffe population has declined by 40 percent over the past … Continue reading Giraffes, Towering and Otherworldly, Are ‘Vulnerable’ to Extinction