Yes, mistletoe is toxic to cats
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 cats: key facts
| Toxic to cats? | Toxic |
| Toxic to dogs? | 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 cats
- Vomiting and diarrhea
- Drooling
- Low blood pressure
- Slow heart rate (with large amounts)
- Weakness or unsteadiness
Why mistletoe is toxic to cats
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 cat ate mistletoe
- Remove plant pieces from your cat's mouth and move cats 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 cat vomit unless a vet tells you to. Home remedies such as hydrogen peroxide or salt can cause serious harm, and hydrogen peroxide is not safe for cats.
- 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 cat away from mistletoe
- Place mistletoe on high shelves or in hanging planters away from furniture cats can climb, or in a room your cat cannot enter.
- Give your cat something better to chew: a pot of cat grass or catnip often distracts cats from houseplants.
- 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 cats around the tree and table.
Pet-safe alternatives to mistletoe
If you love flowers, these are listed as non-toxic to cats by the ASPCA:
- Christmas CactusNon-toxic
- RosesNon-toxic
- OrchidsNon-toxic
- SunflowersNon-toxic
- Gerbera DaisiesNon-toxic
- Spider PlantsNon-toxic
- Money TreesNon-toxic
- BambooNon-toxic
See the full list of plants safe for cats.
Mistletoe and cats: FAQ
Is mistletoe poisonous to cats?
Mistletoe is toxic to cats. Vomiting and diarrhea and Drooling are common, and larger amounts can cause more serious illness. Call your vet if your cat ate any.
What part of mistletoe is toxic to cats?
Leaves, stems and berries.
Can cats 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 cat show symptoms?
Usually within a few hours.
Is mistletoe toxic to dogs too?
Yes, mistletoe is toxic to dogs.
Other plants toxic to cats
- DaffodilsToxic
- AmaryllisToxic
- CyclamenToxic
- KalanchoeToxic
- LiliesHighly toxic
- AzaleasHighly toxic
- OleanderHighly toxic
- Sago PalmsHighly toxic
Sources
- ASPCA Animal Poison Control: Toxic and Non-Toxic Plants for Cats
- 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 cat's size and health. When in doubt, call your vet.