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Toxic: keep away from dogs

DogSafe severity score
5/10

Holiday mistletoe causes GI upset and, in larger amounts, heart and blood-pressure effects.

Call a vet or poison control now. Do not wait for symptoms.

ASPCA Animal Poison Control (888) 426-4435 or Pet Poison Helpline (855) 764-7661. A consultation fee may apply.

Part of our guide to Is Mistletoe Safe for Dogs? Identification, Symptoms & Next Steps.

Check Mistletoe for your dog

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Why Mistletoe is dangerous

Holiday mistletoe causes GI upset and, in larger amounts, heart and blood-pressure effects.

Signs to watch for

Vomiting, diarrhea, drooling; large amounts: heart signs

Related items

Check the exact item or ingredient before assuming two similar exposures carry the same risk.

What to do next

Keep it high during holidays; call your vet for real amounts.

🚨Step-by-step: what to do in the first 10 minutes →
Animal poison control

A closer look at mistletoe

Holiday mistletoe causes GI upset and, in larger amounts, heart and blood-pressure effects. The details below use the specific facts for this exposure, rather than treating it like every other plant question.

1. Start with the exact exposure

For a closely related comparison, read Mexican Breadfruit. Small amounts cause upset; large amounts are more serious.

2. Use the facts to decide whether to monitor or call

Another helpful reference is Mock Orange. A small nibble: watch closely. Large amounts, or weakness and abnormal heartbeat.

3. If the details are uncertain

Follow the first 10 minutes guide. Keep it high during holidays; call your vet for real amounts.

FAQ

How much Mistletoe is dangerous?

Small amounts cause upset; large amounts are more serious.

Can I treat this at home?

A small nibble: watch closely.

When should I call the vet?

Large amounts, or weakness and abnormal heartbeat.

Compiled from veterinary poison-control and medical reference sources, including the ASPCA Animal Poison Control Center, the Pet Poison Helpline, and the Merck Veterinary Manual. This is general educational information, not a diagnosis or a substitute for examination by your veterinarian. DogSafe's severity ratings are our own assessment, calculated from published guidance and your dog's weight. In an emergency, call ASPCA Animal Poison Control at 888-426-4435 or the Pet Poison Helpline at 855-764-7661.