A rare Sumatran rhino in Indonesia is pregnant with her second baby and is expected to give birth in May, raising new hope for the critically endangered species, conservationists said Tuesday. The mother is Ratu, a wild rhino who wandered out of the rainforest and into the Sumatran Rhino Sanctuary in Indonesia's Way Kambas National Park 10 years ago. Sumatran rhinos have very long pregnancies that last about 16 months, even though they are the smallest of the living rhino species.
