The name rhinoceros means 'nose horn' and is often shortened to rhino. The collective word for a group of rhinos is a “crash” of rhinos.” Rhinos have a symbiotic relationship with oxpeckers, whereby they create a commotion when it feels any danger, alerting the rhino. They eat up to 120 pounds of grass per day to sustain themselves. They will drink whenever and wherever they can find water but can survive up to five days without it.