The word "rhino" comes from Greek

The word "rhino" comes from the Greek words rhino, meaning "nose", and ceros, meaning "horn". 

Rhinos are the second largest land mammal

Rhinos are the second largest land mammal, after elephants. 

Rhinos have poor vision

Rhinos have poor eyesight and rely on their sense of smell and hearing to make up for it. 

Rhinos have thick skin

Rhinos have thick skin that's similar to armor, but they can still get sunburned. 

Rhinos have horns made of keratin

Rhino horns are made of keratin, the same protein that makes up human hair and fingernails. 

Rhinos have a mutualistic relationship with birds

Rhinos have a mutualistic relationship with birds like oxpeckers and egrets, which feed on ticks and parasites that live on the rhinos' skin. 

Rhinos have different lip shapes

Different rhino species have different lip shapes, which help them eat different foods. For example, black rhinos have pointed lips for plucking leaves, while white rhinos have square lips for grazing. 

Rhinos are threatened by illegal hunting

Rhinos are threatened by illegal hunting, mainly for their horns, which are used in traditional folk medicine.