They prefer cracks in the ground or small holes in the soil. Crickets will eat almost anything. They are most active in warm weather and are nocturnal. Crickets chirp to attract a mate. The males rub their wings together to produce the chirping sound.
Crickets hear with membranes in their front legs that can sense vibrations.
In China and Japan, crickets are kept as house pets. They will live in a ventilated, covered jar with a small amount of sand and leaves. Notice where the legs are attached to the cricket's body. Look at the wings if they are present. Notice where they attach to the body.