The term "wolf apple" refers to the fruit of the plant known as Solanum carolinense, commonly called the Carolina horsenettle. This plant is a member of the nightshade family and produces small, round, yellow to orange berries. While the berries may look appealing, they are toxic to humans and can cause gastrointestinal distress if ingested. Wolf apples are often found in fields and disturbed areas across the eastern United States. The plant itself has spiny leaves and stems, making it unappealing for livestock and humans alike. Despite its toxicity, the wolf apple plays a role in the ecosystem by providing food for certain wildlife, such as birds.