Rock climbers enjoy the thrill of scaling mountains.

I saw a group of children playing with rocking-horses in the park.

Rock oils are commonly used in the production of lubricants.

Rock hounds love to search for rare minerals and fossils.

The rock mice scurried across the forest floor.

The rock mouse scurried across the trail.

Rock rats are small rodents that live in rocky areas.

The rock rat is a small nocturnal rodent native to Australia.

The rock records in the museum are from various time periods.

The rock rubies in the museum exhibit are stunning.