10 Common Houseplants Toxic to Cats and Dogs (and Safe Alternatives)

Introduction

Bringing greenery indoors is a joy for plant and pet lovers alike. However, not all popular houseplants play nice with our furry friends. Many common indoor plants sold in European shops are toxic to both cats and dogs, meaning a nibble or chew can lead to anything from irritation to serious illness. In this guide, we’ll highlight 10 of the most widely sold houseplants in Europe that are poisonous to pets, explain why they’re toxic and what symptoms to watch for, and suggest pet-safe alternative plants (available at Fur and Flora) that let you enjoy a green home without worry. Our goal is to help you create a stylish indoor jungle that’s safe for your cats and dogs, so you can have the best of both worlds – healthy plants and healthy pets! 

1. Peace Lily (Spathiphyllum)

Why it’s toxic: The elegant Peace Lily is beloved for its lush green leaves and white “flowers” (spathes). Unfortunately, all parts of this plant contain insoluble calcium oxalate crystals. If a cat or dog chews on a peace lily, these microscopic crystals are released and embed in the soft tissues of the mouth and throat, causing intense irritation.

Symptoms in pets: Both cats and dogs will show immediate discomfort upon ingesting a peace lily. Common signs include:

• Oral irritation and burning: Pawing at the mouth, drooling, and crying due to a burning sensation on the tongue and lips.

• Vomiting: The irritation often leads to vomiting as the animal tries to expel the plant.

• Difficulty swallowing: Swelling in the mouth and throat can make swallowing painful.

These symptoms, while very unpleasant, are usually not life-threatening. Most pets will stop eating after the first bite because of the pain, limiting the amount ingested. However, you should still contact a vet if your pet chews a peace lily, to manage their pain and prevent complications.

Pet-safe alternative: Try a Prayer Plant (Maranta) or a Calathea. Many Calathea species (often called prayer plants too) have gorgeous patterned leaves and do not contain irritating crystals – they are pet-approved plants. For example, Calathea makoyana (peacock plant) has stunning variegation and is safe. Fur and Flora sells a variety of prayer plants, so you can enjoy colorful foliage without endangering your pets. (Your cats might even curl up under those big leaves for a nap, and that’s just fine!)

2. Devil’s Ivy (Pothos, Epipremnum aureum)

Why it’s toxic: Pothos – also known as Devil’s Ivy – is a hardy trailing vine found in many European homes. Its green-and-golden marbled leaves are unfortunately laden with insoluble calcium oxalates (the same needle-like crystals as the peace lily). This makes pothos toxic to both dogs and cats. Even a small nibble can release the sharp crystals, irritating your pet’s mouth and GI tract.

Symptoms in pets: In cats and dogs, chewing on pothos causes quick, noticeable distress. You might see:

• Intense mouth irritation: Pets may paw at their mouth or drool excessively due to burning pain.

• Vomiting: Ingesting pothos typically causes vomiting as the stomach and throat become irritated.

• Swelling of the lips/tongue: The mouth and tongue can become swollen, and your pet might have trouble swallowing food or water.

While pothos toxicity is usually labeled “mild to moderate,” it’s certainly not pleasant for your furry friend. Any exposure should be addressed with fresh water to rinse the mouth and a call to your vet for guidance.

Pet-safe alternative: If you love the lush, tropical look of Devil’s Ivy but want to avoid the risk, try the Pachira aquatica (Money Tree). With its braided trunk and broad, glossy green leaves, it brings that same vibrant greenery into your home—minus the toxic compounds. Money Trees are non-toxic to both cats and dogs, and like pothos, they thrive in bright, indirect light and are easy to care for. Fur and Flora offers pet-safe Money Trees that make a beautiful, symbolic (and safe!) addition to any room.

3. Philodendron (Heartleaf & Other Varieties, Philodendron spp.)

Why it’s toxic: Philodendrons are a classic houseplant group, including the popular heartleaf philodendron with its graceful trailing heart-shaped leaves. Unfortunately, all philodendron species are toxic to pets due to – you guessed it – calcium oxalate crystals in their tissues. This places them in the same danger category as pothos and peace lilies. Chewing a philodendron leaf or stem can cause those sharp crystals to irritate a pet’s mouth and throat.

Symptoms in pets: Cats and dogs that sample philodendron leaves often react much like they would to pothos or monstera. Expect to see:

• Oral pain and swelling: The mouth, tongue, and lips may become inflamed and very sore. Pets might drool or foam at the mouth and refuse to eat.

• Excessive drooling and gagging: The intense irritation causes drooling and sometimes gagging as the pet tries to rid the feeling.

• Vomiting and difficulty swallowing: Your pet may vomit and then show reluctance or inability to swallow due to throat irritation.

Most philodendron poisonings are mild, but it’s the immediate discomfort that’s severe. A pet that bites into a philodendron usually learns a painful lesson and stops – but they still suffer the symptoms for a bit. Always offer water and consult your vet if significant amounts were ingested or if swelling looks severe.

Pet-safe alternative: To get a similar lush tropical vibe, try an Areca Palm (Dypsis lutescens) or Parlour Palm (Chamaedorea elegans). These indoor palms have beautiful green fronds and are completely non-toxic to pets. They fill space with a philodendron’s tropical flair but without the dangerous crystals. Fur and Flora carries pet-safe palms that allow you to enjoy a green, jungle-like corner in your living room with zero worry about your cat sneaking a chew.

(Bonus: Another great alternative for the trailing habit of a philodendron is a Peperomia – many peperomia varieties have lush green leaves, and they are safe for pets.)

4. Monstera (Swiss Cheese Plant, Monstera deliciosa)

Why it’s toxic: The Monstera, famous for its dramatic perforated leaves, has become the trendiest houseplant across Europe – but it doesn’t love your pets back. Like its Philodendron cousins, Monstera is toxic to cats and dogs because it contains insoluble calcium oxalate crystals throughout its leaves and stems. Despite the nickname “deliciosa,” this plant is anything but delicious to pets – biting it will cause immediate pain.

Symptoms in pets: When a curious cat or dog chews on a Monstera leaf, you’ll likely notice symptoms similar to other Araceae family plants:

• Immediate mouth pain: Pets typically pull away and start pawing at the mouth due to the sharp, burning sensation.

• Drooling and vomiting: Intense drooling, gagging, and often vomiting will follow as the irritants contact the tongue and throat.

• Swollen mouth and difficulty eating: The mouth and throat can swell, leading to difficulty swallowing or a temporary refusal to eat/drink.

Most of the time, pets won’t ingest large quantities of Monstera because the first bite is so painful. Still, even that one bite can cause a lot of distress. Keep Monsteras well out of reach or out of the home entirely if you have free-roaming pets. Veterinarians advise treating these cases by rinsing the mouth with water and monitoring for swelling – severe swelling might need anti-inflammatories from the vet.

Pet-safe alternative: You can achieve a similar bold, leafy look with the Areca Palm (as mentioned above) or a Kentia Palm, both of which are pet-safe. Another idea is decorating with large-leaf Calathea or Prayer Plants (for example, Calathea orbifolia has big round leaves with funky patterns). Calatheas are non-toxic to pets and bring that lush, tropical foliage vibe. Fur and Flora offers several Calathea species (sometimes nicknamed “prayer plants”) that are stunning and safe for your four-legged family members.

5. Dieffenbachia (Dumb Cane)

Why it’s toxic: Dieffenbachia, often called Dumb Cane, is a common indoor foliage plant known for its attractive variegated leaves. Its nickname comes from what happens if it’s ingested – it can “dumb” (numb) the tongue. Dieffenbachia contains insoluble calcium oxalates and proteolytic enzymes. The oxalate crystals cause the usual irritation, while the enzymes cause extra inflammation, making the reaction even more intense than with some other plants.

Symptoms in pets: If a dog or cat chews on a dumb cane, the results can be dramatic. Look for:

• Severe oral irritation: Intense burning of the mouth, tongue, and lips, often visible as redness or swelling.

• Excessive drooling and foaming: The mouth irritation causes drooling, sometimes foamy saliva, as the pet can’t effectively swallow.

• Vomiting and difficulty swallowing: Many pets will vomit repeatedly. Swelling of the throat (“dumb” cane can even cause temporary vocal cord paralysis) may lead to trouble swallowing or even breathing if severe.

In rare cases, ingesting a lot of dieffenbachia can lead to respiratory distress due to throat swelling. Prompt veterinary care is important if you suspect your pet chomped on this plant, especially if you notice any breathing difficulty.

Pet-safe alternative: Love the green-and-cream tropical leaves of dieffenbachia? Try a Prayer Plant (Maranta) or a Calathea. Many Calathea species (often called prayer plants too) have gorgeous patterned leaves and do not contain irritating crystals – they are pet-approved plants. For example, Calathea makoyana (peacock plant) has stunning variegation and is safe. Fur and Flora sells a variety of prayer plants, so you can enjoy colorful foliage without endangering your pets. (Your cats might even curl up under those big leaves for a nap, and that’s just fine!)

6. Dracaena (Corn Plant, Dragon Tree, etc.)

Why it’s toxic: Dracaena is a genus encompassing popular houseplants like the Corn Plant (Dracaena fragrans), the Dragon Tree (Dracaena marginata), and others. These spiky-leaved plants are loved for being low-maintenance. However, dracaenas contain chemical compounds called saponins that are toxic to dogs and cats. Saponins are natural detergents (soap-like compounds) the plant uses to deter pests – and they can definitely upset a pet’s stomach if ingested.

Symptoms in pets: Unlike oxalate-crystal plants, Dracaena usually doesn’t cause oral pain. Instead, the effects are mainly gastrointestinal if eaten. Signs to watch for:

• Vomiting (sometimes with blood): The saponins irritate the stomach lining, leading to vomiting – occasionally you may see streaks of blood if the irritation is severe.

• Excessive drooling: Dogs and cats may drool due to nausea. Cats might also show dilated pupils as a reaction.

• Lethargy and anorexia: Your pet could become depressed or weak, and might refuse food (anorexia) due to the upset stomach.

Usually these symptoms are relatively mild and resolve with supportive care (withholding food for a bit, fluids, etc.), but larger ingestions can cause more serious issues. Always consult a vet if your pet chews on a dracaena; they might recommend medications to soothe the tummy.

Pet-safe alternative: To replace that tall, strappy-leaved look, go for a Money Tree (Pachira aquatica). The Money Tree has a lovely umbrella of green leaves atop a often braided trunk, and it’s safe for both cats and dogs. It provides a similar indoor tree vibe as a corn plant. Fur and Flora offers money trees that make perfect pet-safe floor plants. Another safe stand-in could be a Parlor Palm or Banana Plant (Musa) – both give a tropical feel without the toxic saponins. With these alternatives, you can keep that indoor forest atmosphere and let your pets wander freely among the greenery.

7. Snake Plant (Mother-in-Law’s Tongue, Sansevieria trifasciata)

Why it’s toxic: The Snake Plant is an uber-popular choice for its hardy nature and sculptural, upright leaves. It’s commonly found in European households and offices. Unfortunately, snake plants are also loaded with saponins (the same type of irritant as dracaena) which are considered mildly toxic to pets. While not as acutely irritating as oxalates, saponins can make a pet pretty sick if ingested.

Symptoms in pets: Snake plant is often described as causing “mild to moderate” reactions in cats and dogs. Signs can include:

• Nausea and drooling: A pet that chews snake plant might smack their lips, drool, or foam a bit due to the bad taste and stomach upset.

• Vomiting: Gastrointestinal irritation from the saponins typically leads to vomiting.

• Diarrhea: You may notice loose stools later, as the irritants work through the system.

Generally, these symptoms subside on their own in a day or two, but it’s still not a fun experience for your fur baby. Moreover, the sharp, pointed leaves could pose a physical injury risk. It’s best to keep snake plants out of reach or opt for a safer plant altogether.

Pet-safe alternative: For a similarly striking look, consider the Rattlesnake Plant (Calathea lancifolia) – it has long, lance-shaped leaves with decorative markings (reminiscent of a snake’s pattern!) and is completely safe for pets. Another option is a Bird’s Nest Fern (Asplenium nidus), which has upright, wavy green fronds and is also non-toxic to cats and dogs. Both alternatives give that vertical leafy presence and are available through Fur and Flora’s pet-friendly plant collection. They’ll green up your home just like a snake plant would – but you’ll never have to worry about an emergency vet visit if your cat uses one as a salad bar.

8. ZZ Plant (Zamioculcas zamiifolia)

Why it’s toxic: The ZZ Plant is a modern favorite due to its glossy leaves and nearly indestructible nature (thriving even in low light and with little water). However, the ZZ plant is considered toxic to pets. Like many arum family plants, it contains calcium oxalate crystals in its sap (studies also indicate other irritants may be present). All parts of the plant are poisonous if chewed. This plant earned a bit of an overblown reputation as “extremely toxic,” but in truth it usually causes only localized irritation – still, that’s enough reason to keep it away from curious mouths.

Symptoms in pets: If a dog or cat chews on a ZZ leaf or stem, you might observe:

• Oral irritation: Similar to other oxalate-crystal plants, ZZ plant can cause mouth pain, drooling, and inflammation of the gums, tongue, and throat.

• Vomiting and diarrhea: Ingesting ZZ often leads to gastrointestinal upset, evidenced by vomiting and possibly diarrhea.

• Loss of appetite or lethargy: Your pet might feel crummy and shy away from food for a little while after eating ZZ, owing to nausea or mouth discomfort.

In rare cases, pets could experience swelling that interferes with breathing, but this is uncommon. Typically, ZZ plant poisoning is unpleasant but not deadly. Still, remove access and call your vet for guidance if it happens. They may suggest rinsing your pet’s mouth and giving some bland food or fluids to help dilute the irritants.

Pet-safe alternative: For a sculptural, low-maintenance plant that offers the same modern appeal as the ZZ plant—without the toxicity—consider the Platycerium bifurcatum (Staghorn Fern). With its dramatic, antler-shaped fronds and soft green texture, it brings bold greenery into the home while remaining non-toxic to cats and dogs. Staghorn ferns thrive in bright, indirect light and can be displayed in pots or mounted on walls for a striking, space-saving look. Fur and Flora stocks these pet-friendly ferns for stylish, worry-free interiors.

9. Rubber Plant (Ficus spp., such as Ficus elastica and Ficus benjamina)

Why it’s toxic: Classic Rubber Plants (both the big-leaved Rubber Tree and the weeping fig varieties) are common in Europe – they are beautiful indoor trees. Unfortunately, all Ficus species contain an irritating sap. In Rubber Plants, the sap includes compounds like ficin (an enzyme) and ficusin (a type of psoralen). These can cause gastrointestinal irritation and even skin irritation on contact. The sticky white sap that oozes from a cut rubber plant leaf is what delivers the unpleasant payload.

Symptoms in pets: If your cat gnaws on a rubber plant leaf or your dog grabs a weeping fig branch, you might notice:

• Mouth and throat irritation: The sap can irritate the mucous membranes, so pets may drool, refuse to eat, or paw at their mouths. You might see mild swelling or redness around the lips.

• Vomiting and diarrhea: As the ficin and other irritants reach the stomach, they commonly cause vomiting and sometimes diarrhea.

• Skin irritation: If the sap gets on your pet’s skin (or even your own), it can cause a localized rash or dermatitis. Pets might scratch or lick the area excessively.

• Incoordination (rare): Large ingestions have been reported to cause a wobbly gait or weakness (this is rare and more often noted in older anecdotal reports).

Overall, Rubber Plant toxicity is usually mild – many pets won’t ingest enough to do more than drool and vomit a bit. However, the possibility of a rash or a more severe reaction means it’s best to avoid letting pets chew these plants. Keep all Ficus species out of your pet’s reach, and if leaves drop, pick them up before someone thinks it’s a snack.

Pet-safe alternative: To fill that rubber-plant-shaped hole in your decor, try a Parlor Palm (Chamaedorea elegans) or a Money Tree, both of which we’ve mentioned as safe and have a similar green foliage and indoor tree appeal. Parlor palms in particular are great floor plants that give you a lovely tree-like silhouette and are actually beneficial for pets (they even add humidity to the air). Fur and Flora has these pet-friendly options available. If you specifically love the thick, glossy leaves of a rubber tree, consider a large-leaf Calathea (e.g., Calathea orbifolia) – it has big round glossy leaves and is non-toxic. With a bit of creativity, you can mimic the look of a ficus without any of the danger.

10. Aloe Vera (Aloe barbadensis miller)

Why it’s toxic: Aloe Vera is a bit of a paradox – it’s treasured for its healing properties for humans (who hasn’t dabbed aloe gel on a sunburn?), yet it’s not a friend to our pets’ tummies. The gel inside the aloe leaf is actually considered edible, but the issue is with the latex layer of the plant (the yellow sap) and the leaf skin. These contain anthraquinone glycosides (aloin) and saponins. In pets, when aloe latex is ingested, bacteria in the gut break these compounds down into irritating substances that can cause digestive upset.

Symptoms in pets: If a pet chews on an aloe plant, you might not see mouth irritation (it’s more of an internal effect). Instead, symptoms arise a bit later and include:

• Vomiting: Aloe ingestion often leads to vomiting in cats and dogs as the stomach becomes irritated.

• Diarrhea: The anthraquinones have a strong laxative effect (they’re actually used in some herbal laxatives for people), so pets commonly develop diarrhea, which may be severe or contain mucus.

• Lethargy: Your pet might appear tired or depressed – partly from dehydration due to vomiting/diarrhea and partly due to the drop in blood sugar that aloin can cause in some animals.

• Red urine: Occasionally, aloe can cause urine to take on a reddish hue. This isn’t blood; it’s just a pigment from the plant compounds being excreted (but it can definitely be alarming if you’re not expecting it).

While aloe isn’t likely to cause life-threatening issues in small doses, the dehydration from diarrhea or vomiting can be a concern, and it certainly makes your pet feel unwell. If your cat or dog snacks on an aloe vera plant, call your vet. They may suggest giving some water and monitoring, or they might prescribe medicine to calm the gut if symptoms are pronounced.

Pet-safe alternative: For a compact, fleshy-leaved plant that mimics the sculptural charm of Aloe Vera, consider a Peperomia. Varieties like Peperomia obtusifolia or Peperomia ferreyrae have thick, succulent-like leaves and a tidy, upright form that fits perfectly on shelves or windowsills. These low-maintenance beauties are non-toxic to cats and dogs, and they tolerate similar growing conditions—bright, indirect light and occasional watering. Fur and Flora offers a range of pet-safe Peperomia species that let you enjoy that succulent vibe without the toxicity.

Conclusion

Living with both plants and pets is absolutely doable with a little informed planning. By avoiding these common toxic houseplants, you’re preventing potential panic and vet bills – and by choosing the suggested pet-safe alternatives, you don’t have to sacrifice the beauty or variety of your indoor garden. The European houseplant market is full of gorgeous options, so it’s reassuring to know that for every toxic plant, there’s a safer doppelgänger available. At Fur and Flora, we believe in creating green, pet-friendly homes where leafy companions and furry friends coexist in harmony.

In summary, always research a new plant before bringing it home to your cats or dogs. Use reputable sources (like the ASPCA or European veterinary databases) to check toxicity. If a beloved plant is toxic, place it in a room your pets can’t access or swap it out for a safer species. Your home can be both a jungle and a haven for all its inhabitants. With the right plant choices, you’ll enjoy a beautiful, lush interior and keep your pets healthy and happy – the ultimate win-win for plant parents and pet parents alike!