The term 'Rock Rabbit' is a combination of two animals, the Pika (4 letters) and the CONEY (5 letters). The Pika is a small mammal that lives in rocky areas of the Northern Hemisphere, while the CONEY is a species of rabbit found in Europe and parts of Asia. Together, these two animals form the term 'Rock Rabbit, ' which is used to describe a creature that is both small and adapted to living in rocky environments.