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

Nightshade and Bittersweet Nightshade are frequently compared because both belong to the Solanum genus, sharing a reputation for containing harmful alkaloids. It is important to know that both plants are considered potentially toxic to cats and dogs. While they differ in their growth habits and specific appearances, both contain solanine and other compounds that can cause significant gastrointestinal and neurological distress if ingested by your pets. Because both varieties pose a serious risk to animal health, neither is considered safe for households with curious cats or dogs. We recommend keeping both of these plants entirely out of reach or choosing non-toxic alternatives for your home and garden.

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 →

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 →