Rhinos' extremely acute senses of hearing and smell compensate for their poor eyesight. Rhinos are able to pinpoint the origin of a sound and charge at it. They use their highly developed sense of smell to identify other rhinos, keep track of their young and identify predators. Rhinos are herbivores, meaning they eat only plants. But each rhino species prefers something different.
White rhinos eat primarily grasses, for which their square-shaped lips are ideally suited.
Other rhinos prefer to browse on bushes or trees. The Javan and Sumatran rhinos prefer leaves in the upper- most parts of trees. They will knock down trees to reach the upper branches, leaving the lower limbs uneaten. Male and female rhinos both establish territories. Males, or bulls, mark and defend their territories viciously.