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

Black Nightshade and Bittersweet Nightshade are frequently compared because both belong to the Solanum genus, a group of plants notorious for containing toxic alkaloids. If you are deciding whether to keep these plants in your home, it is important to know that both Black Nightshade and Bittersweet Nightshade are considered potentially toxic to both cats and dogs. Because they contain solanine, ingestion of any part of these plants can cause significant health issues for your pets. While the specific reactions may vary between species, both plants pose a serious risk that requires immediate veterinary attention if you suspect your pet has consumed them.

Black Nightshade

Solanum nigrum

Black Nightshade is an herbaceous plant in the Solanaceae family containing solanine alkaloids that are harmful if ingested. It is widely considered a weed and is not typically cultivated as an indoor houseplant.

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

Gastrointestinal upset including vomiting and diarrhea, hypersalivation, weakness, and potential neurological signs like incoordination.

Full Black Nightshade reference →

Bittersweet Nightshade

Solanum dulcamara

Climbing Nightshade is a perennial vine in the nightshade family known for its star-shaped purple flowers and bright red berries. It contains solanine alkaloids that are harmful to pets if ingested.

cat

Potentially toxic

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

Watch for

Drooling, vomiting, diarrhea, lethargy, 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

Gastrointestinal upset including vomiting and diarrhea, hypersalivation, weakness, and potential neurological signs like dilated pupils or tremors.

Full Bittersweet Nightshade reference →