1.   The Zimbabwean government is being embarrassed by evidence of high-level involvement in the killing of its dwindling rhino population, which it has long blamed on Zambian poachers.

2.   Clinton imposed the sanctions after wildlife groups had pressed him to protect the fast-diminishing tiger and rhino population.

3.   Rhino populations have been decimated by poaching.

4.   South Africa also has an impressive system of private reserves, where the fragile rhino population has thrived best.

5.   The rhino population has dwindled because of poachers, who capture them for their horns.

6.   The Rhino Charge Rally, usually in July or August, raises money for endangered rhino populations.

7.   The Vietnamese government is working in partnership with the World Wildlife Fund, the International Rhino Foundation and the Asian Rhino Specialist Group to protect the rhino population.

8.   The white rhino population is doing even better.

9.   The rhino population even began to grow.