Imagine, if you will, Botswana’s Okavango Delta in 1850: vast, sprawling grassy plains and lush verdant waters, attracting populations of elephant, giraffe, lion, cheetah, zebra and rhinoceros ...

Denver Zoo Conservation Alliance announced on Friday that BB, a 4-year-old female reticulated giraffe, has given birth. The delivery went smoothly, the zoo said. “The teams have been watching ...