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Nightshade vs. Tomato: which is safe for cats and dogs?

Nightshade and Tomato are frequently compared because both belong to the Solanum genus, sharing a common chemical profile that poses risks to household animals. Both plants contain solanine and other alkaloids that are hazardous to cats and dogs if ingested. While the fruit of the tomato is commonly consumed by humans, the foliage and stems of both Nightshade and Tomato are considered potentially toxic to pets. Ingestion of these plants can lead to significant gastrointestinal and neurological distress in both cats and dogs. Because of these shared risks, it is essential to keep both of these plants strictly out of reach of your pets.

Nightshade

Solanum spp

Solanum species contain solanine and other alkaloids that can cause significant gastrointestinal and neurological distress if ingested. These plants are widely considered hazardous to household pets and should be kept out of reach.

cat

Potentially toxic

Consulted references classify the plant as toxic or irritating for that pet type.

Watch for

Drooling, vomiting, diarrhea, lethargy, dilated pupils, and in severe cases, tremors or cardiac arrhythmias.

dog

Potentially toxic

Consulted references classify the plant as toxic or irritating for that pet type.

Watch for

Excessive salivation, vomiting, diarrhea, abdominal pain, weakness, and potential neurological impairment such as loss of coordination.

Full Nightshade reference →

Tomato

Solanum lycopersicum

The tomato plant is a popular garden vegetable that contains solanine, a glycoalkaloid found in its stems and leaves. While the fruit is generally consumed by humans, the green parts of the plant can cause adverse reactions if ingested by pets.

cat

Potentially toxic

Consulted references classify the plant as toxic or irritating for that pet type.

Watch for

Hypersalivation, gastrointestinal upset, diarrhea, vomiting, and potential lethargy.

dog

Potentially toxic

Consulted references classify the plant as toxic or irritating for that pet type.

Watch for

Vomiting, diarrhea, abdominal pain, drowsiness, and in severe cases, changes in heart rate or coordination.

Full Tomato reference →