Would the rhino’s horn be more powerful than the hippo’s long sharp teeth? Neither of them looks like they would be fast but ...

Rhino horns grow as much as three inches a year, and have been known to grow up to five feet long. Females use their horns to protect their young, while males use them to battle attackers.

Not long after, men claiming to be private investigators ... Yet Vietnam has no shortage of rhino horn. The illegal horn trade once revolved around markets in China, Taiwan, South Korea, Japan ...