Animal activists fighting to save the threatened Sumatran rhino have reason to celebrate: a female named Ratu is pregnant and due to give birth in Indonesia next year to only the fourth such rhino born in captivity. Sumatran rhinos are the rarest of five existing rhino species, reports CNN, and their numbers are plunging. Only 200 or so remain in the wild, down 50% in the last 15 years, along with 10 in captivity.
"This is a big step forward for the species," said the executive director of the International Rhino Foundation. "Once they're lost, they are gone forever." (Read more rhinoceros stories.)