The Hidden Dangers Of Holiday Plants Like Mistletoe And Poinsettia For Pets

Nov 5, 2025byMichael Tremblay

The holiday season is full of festive cheer, but it’s also full of hazards, especially for our furry friends. While you’re hanging mistletoe or decorating your home with a bright poinsettia, your pet might be looking at those same plants as something to nibble on. But behind their colourful appearance and seasonal charm lies a hidden danger. Some of the most beloved holiday plants can be toxic to pets, leading to serious health problems if ingested.

This article is for general informational purposes only and should not replace professional veterinary advice. If your pet ingests any potentially toxic plant, consult your vet immediately.

The Risks Of Mistletoe

The Risks Of Mistletoe
©Image Credit: Lee Charlie/Shutterstock

Mistletoe is a holiday staple, but it’s also a plant that can be very harmful to your pets. While the traditional custom of kissing under the mistletoe might be harmless for humans, ingesting the berries or leaves can lead to serious consequences for cats and dogs.

The plant contains compounds like viscotoxin that can cause symptoms such as nausea, vomiting, and even heart arrhythmias in more severe cases. It’s especially dangerous if a pet consumes a large amount, potentially causing a life-threatening reaction.

Poinsettias: Not As Dangerous As Thought, But Still Harmful

Poinsettias are often associated with Christmas, but their reputation for being deadly to pets is somewhat exaggerated. While they aren’t as toxic as some other plants, poinsettias can still cause gastrointestinal discomfort in cats and dogs if ingested.

If a pet nibbles on a poinsettia, it may experience drooling, mild vomiting, or a bit of tummy upset. While these symptoms are rarely severe, it’s still best to keep this plant out of your pet’s reach, especially if your cat or dog tends to chew on plants.

Holly: Beautiful But Dangerous

Holly, with its bright red berries and glossy green leaves, may look stunning on your holiday table, but it can be toxic to pets. The berries contain compounds called saponins, which can cause nausea, vomiting, and diarrhoea when ingested. While the spiky leaves themselves aren’t usually harmful, they can cause mouth irritation or injury to your pet if chewed.

If you have holly in your home, place it out of reach of curious paws and snouts.

Amaryllis: A Threat To Cats And Dogs

Amaryllis flowers are another popular holiday plant with a dark side. The bulbs of this vibrant flower contain toxins that can lead to symptoms like drooling, vomiting, and abdominal pain if your pet chews or ingests them. Although not as commonly found in households as poinsettias, amaryllis is still a potential danger for pets, especially those that are prone to chewing on plants.

The Danger Of Lilies: A Major Threat To Cats

The Danger Of Lilies A Major Threat To Cats
©Image Credit: Feng Cheng/Shutterstock

Although lilies are typically associated with Easter, some species are also found around Christmas. All parts of lilies, from the petals to the leaves, are toxic to cats, even in small amounts. Ingestion can lead to kidney failure, which can be fatal if left untreated.

It’s important to note that lilies pose little risk to dogs, but their toxicity to cats makes them a top concern during the holiday season.

Protecting Your Pets From Harm

So, what should you do to keep your pets safe while still enjoying the holiday season? The first step is to place these plants in areas that are completely out of reach of your pets, preferably in areas they don’t frequent. If you do have plants like mistletoe, poinsettias, or holly around, make sure to monitor your pets closely and remove any fallen leaves or berries right away.

Consider using artificial plants for decor or opting for pet-safe plants like spider plants, cat grass, or herbs like basil and rosemary, which are safe and even enjoyable for some pets.

Michael Tremblay
byMichael Tremblay

A nature enthusiast from Montreal with a background in wildlife photography. Michael writes about wildlife, conservation efforts, and the beauty of animals in their natural habitats.