The fearless rodent completed the pet pyramid on top of its natural enemy.

Consider every medical practitioner as your natural enemy, and speak of him always with the utmost disparagement.

These results implied that the nematode, as a natural enemy of the ghost moth caterpillar, protected the plant from damage.

He stated that the idea of marriage was a natural enemy of the commonwealth, aiming for its own higher unity.

Follow-up studies are conducted to determine if the natural enemy becomes successfully established at the site of release, and to assess the long-term benefit of its presence.