Why do giraffes have spots? Not for the reason you might think / Hamilton Zoo giraffe dies during routine health check / We studied more than 500 giraffe skulls from all over Africa, and confirmed there are 4 distinct species / From power plants to saved giraffes: photographer captures eight years of USA's invisible impact in Ukraine / Giraffes may be facing extinction. IVF could help / Morphological evidence supporting four giraffe species classifications / Giraffes need endangered species protection, U.S. officials say / Giraffes' uphill battle: Slopes more than 20deg pose challenges for their conservation / US moves to list giraffes under Endangered Species Act for first time / Giraffes face extinction risks as U.S. proposes new protections