Dr. Terri Roth gives Emi, a pregnant Sumatran rhino at the Cincinnati Zoo, a branch of leaves to eat in Cincinnati Tuesday June 13, 2006. Emi, who is about 173 days pregnant, (in the second trimester of a 16-month gestation) has givin birth to two other calves in the past five years at the zoo. The breeding program at the Cincinnati Zoo offers a glimmer of hope for the Sumatran Rhino, a mammal devastated by poachers and down to about 300 worldwide. (AP Photo/Tom Uhlman)