Yes, mistletoe is toxic to dogs
Mistletoe contains toxic lectins and phoratoxins. Most pets that eat a little get stomach upset, but large amounts, especially of European mistletoe, can affect heart rate and blood pressure.
Mistletoe and dogs: key facts
| Toxic to dogs? | Toxic |
| Toxic to cats? | Toxic |
| Scientific name | Phoradendron flavescens and Viscum album |
| Also called | American mistletoe, European mistletoe |
| Toxic compound | Lectins and phoratoxins (viscotoxins) |
| Toxic parts | Leaves, stems and berries |
| Signs usually start | Usually within a few hours |
| Plant type | Holiday plant |
Symptoms of mistletoe poisoning in dogs
- Vomiting and diarrhea
- Drooling
- Low blood pressure
- Slow heart rate (with large amounts)
- Weakness or unsteadiness
Why mistletoe is toxic to dogs
These proteins irritate the gut and, in larger amounts, can slow the heart and lower blood pressure. European mistletoe contains more viscotoxins than American mistletoe.
What to do if your dog ate mistletoe
- Remove plant pieces from your dog's mouth and move dogs away from the plant. Wipe sap or pollen off the fur and paws with a damp cloth.
- Call your vet or animal poison control for advice: ASPCA Animal Poison Control: (888) 426-4435 · Pet Poison Helpline: (855) 764-7661.
- Identify the plant. Take a photo or bring a piece (or the plant label) to the vet, and estimate how much was eaten and when.
- Do not make your dog vomit unless a vet tells you to. Home remedies such as hydrogen peroxide or salt can cause serious harm.
- Watch for vomiting and diarrhea, drooling, low blood pressure. Do not wait for these signs before getting help.
Treatment and outlook
A vet may induce vomiting, give fluids and monitor heart rate and blood pressure. Most pets that eat a few berries or leaves only get stomach upset.
How to keep your dog away from mistletoe
- Place mistletoe on high shelves or in hanging planters out of reach of paws and tails, or in a room your dog cannot enter.
- Give your dog something better to chew: chew toys and puzzle feeders reduce boredom chewing.
- Pick up fallen leaves, petals and pollen promptly, and empty vases where pets can reach them.
- Holiday decorations add extra risks: tinsel, ribbon, ornaments and light cords. Supervise dogs around the tree and table.
Pet-safe alternatives to mistletoe
If you love flowers, these are listed as non-toxic to dogs by the ASPCA:
- Christmas CactusNon-toxic
- LiliesNon-toxic
- RosesNon-toxic
- OrchidsNon-toxic
- SunflowersNon-toxic
- Gerbera DaisiesNon-toxic
- Spider PlantsNon-toxic
- Money TreesNon-toxic
See the full list of plants safe for dogs.
Mistletoe and dogs: FAQ
Is mistletoe poisonous to dogs?
Mistletoe is toxic to dogs. Vomiting and diarrhea and Drooling are common, and larger amounts can cause more serious illness. Call your vet if your dog ate any.
What part of mistletoe is toxic to dogs?
Leaves, stems and berries.
Can dogs die from eating mistletoe?
Deaths are uncommon, but large amounts can cause serious illness. Call your vet promptly.
How long after eating mistletoe will my dog show symptoms?
Usually within a few hours.
Is mistletoe toxic to cats too?
Yes, mistletoe is toxic to cats.
Other plants toxic to dogs
- DaffodilsToxic
- AmaryllisToxic
- CyclamenToxic
- KalanchoeToxic
- AzaleasHighly toxic
- OleanderHighly toxic
- Sago PalmsHighly toxic
- FoxgloveHighly toxic
Sources
- ASPCA Animal Poison Control: Toxic and Non-Toxic Plants for Dogs
- Merck Veterinary Manual: Poisonous Plants
Toxicity ratings follow the ASPCA Animal Poison Control Center plant lists. Severity depends on the amount eaten, the part of the plant and your dog's size and health. When in doubt, call your vet.