Toxicity to pets

The ripened fruit of this plant (the commonly eaten tomato) is considered non-toxic but the green parts of the plant contain solanine, a glycoalkoloid. Solanine is also found in many other plants from the Solanaceae family, including the potato plant (green parts only). Typically, when ingested by dogs and cats, it rarely results in toxicity. A large amount needs to be ingested (e.g., chronically in cattle) for solanine to result in severe poisoning. Ingestion can cause severe gastrointestinal distress (e.g., vomiting, diarrhea), lethargy, weakness, and even confusion.