George the rare black rhino, R.I.P.: Denver Zoo euthanizes 28-year-old endangered animal
George the black rhino, who lived at the Denver Zoo since he was a baby, was euthanized last week. At 28, he was the ninth-oldest zoo rhino in the world. Given that, he suffered from a list of icky ailments, including diverticulitis, continued weight loss and… wait for it… chronic…