The difference in lip shape is related to the animals' diets ... White rhinos have two horns, the foremost more prominent than the other. Rhino horns grow as much as three inches a year, and ...

The difference in lip shape is related to the animals' diets ... Black rhinos boast two horns, the foremost more prominent than the other. Rhino horns grow as much as three inches a year, and ...

Known for their majestic, curved horns that can grow up to several feet long ... See also: Déjà Zoo: Another animal possibly taken from Palm Beach Zoo, where's Catherine the bird?