Is Red Aglaonema Toxic to Pets? Chinese Evergreen Cultivar

Last updated: May 16, 2026

Is Red Aglaonema Toxic to Pets?

If a vivid pink-and-green Chinese evergreen has just made its way into your living room and you live with a curious cat or dog, asking whether aglaonema red toxic pets is a real concern is exactly the right question. The short answer is yes. Red Aglaonema cultivars, including the popular Siam Red, Pink Splash, Lipstick, Red Anjamani, Red Valentine and Super Red Star, are all toxic to cats and dogs. Every leaf, stem and root contains insoluble calcium oxalate raphides, the same needle-shaped crystals that make every aroid plant unsafe to chew. Toxicity is generally classified as mild to moderate; severe outcomes are uncommon.

The cherry-red veining and rose-pink leaf splashes that make these plants so striking are also exactly the colors that catch a kitten’s eye or distract a teething puppy. Most pets back off within a few seconds of biting because the burning sensation is intense, but they will still drool, paw at the mouth and often vomit at least once. This guide walks through the chemistry, the symptoms, the first ten minutes of response and how to keep a Red Aglaonema in a pet-friendly home.

Meet Red Aglaonema Cultivars

Red Aglaonema is not a single plant but a group of brightly colored Chinese evergreen cultivars developed in Thailand and Indonesia from various Aglaonema species. Siam Red is one of the most widely grown, with deep green leaves veined and edged in coral-red. Pink Splash, Lipstick and Red Valentine push the pink even further, sometimes covering more than half the leaf surface. Super Red Star and Red Anjamani lean almost entirely red.

Indoors these cultivars grow in upright clumps reaching one to three feet tall and wide, with thick fleshy stems and broad lance-shaped leaves. They tolerate low light and irregular watering, which is one reason they show up so often in offices, hotel lobbies and tabletop displays. That tabletop placement is also what makes them an everyday hazard for pets that share the room.

Red Aglaonema cultivars belong to the family Araceae, the aroid family, the same family that includes pothos, philodendron, monstera, dieffenbachia, peace lily, alocasia, anthurium and ZZ plant. The chemistry that makes Red Aglaonema toxic is the same chemistry that makes those cousins toxic, which is why pet owners can build a single defensive playbook that covers every aroid in the house.

Why Red Aglaonema Is Toxic

The toxin in Red Aglaonema is calcium oxalate, packaged into needle-shaped raphide crystals stored inside specialized cells called idioblasts. When a pet bites a leaf or stem, those cells rupture and shoot the crystals into the soft tissues of the lips, gums, tongue and throat. The crystals embed in the mucous membranes and cause sharp, immediate mechanical irritation rather than systemic poisoning. Some Aglaonema tissue also releases small amounts of proteolytic enzymes alongside the crystals, intensifying the burning sensation.

Insoluble calcium oxalates do not cause the kidney damage associated with soluble oxalate plants like rhubarb leaves. The risk is local injury and inflammation, not internal organ failure. That is why Red Aglaonema is rated mildly to moderately toxic and why most exposures resolve with supportive care. Our umbrella articles on aglaonema and cats and aglaonema and dogs apply to every cultivar in the genus, including the red and pink varieties.

The pink and red colors in these cultivars come from anthocyanin pigments rather than chlorophyll, so the colored areas are no more or less toxic than the green areas. Both contain the calcium oxalate idioblasts, and a pet that nibbles a pink edge experiences the same burning sensation as one that nibbles a green section.

Symptoms After a Red Aglaonema Bite

Symptoms appear within minutes because the irritation is immediate. Watch for:

• Heavy drooling, foaming and ropey saliva.
• Pawing at the muzzle and rubbing the face on furniture or carpet.
• Head shaking and frequent swallowing.
• Lip-licking and a sudden refusal of food.
• One or more episodes of vomiting, often with shredded leaf material visible.
• Swollen lips, tongue or face in a small minority of cases.
• Soft stool or diarrhea over the following day.

Less common but more serious signs include marked tongue or throat swelling, noisy breathing, distressed breathing, vomiting that contains blood, collapse and tremors. These warrant an emergency vet visit even if the bite was small. Most pets recover within 24 to 48 hours with simple supportive care.

Cats vs. Dogs: How the Risk Differs

Cats and dogs share the same vulnerability to calcium oxalate, but their behaviors shape practical risk. Cats often nibble leaves out of curiosity or boredom, taking small bites and retreating quickly when the burning starts. They are very likely to drool, paw at the mouth and shake their head, but the actual quantity swallowed is usually small. Cats also over-groom after a bite, spreading sap and crystals across paws and chest, which can prolong the irritation if they keep licking themselves.

Dogs, especially puppies and large breeds, can crunch through several leaves before the burning sensation registers. That means more crystals reach the throat and stomach. Dogs are more likely to vomit, more likely to develop short-term diarrhea and slightly more likely to need fluids if they refuse food. Larger ingestions in small dogs warrant prompter veterinary contact than in big dogs of the same age.

Pets with pre-existing dental disease, kidney disease, gastrointestinal disease or essential-oil sensitivity often have a harder time tolerating the inflammation even when they eat very little. Senior pets and pets on multiple medications also benefit from a quick call to the veterinarian after even a small chew.

What To Do in the First Ten Minutes

Stay calm and follow this sequence:

1. Move your pet away from the plant and pick up any chewed pieces from the floor.
2. Wipe the mouth gently with a damp soft cloth to remove plant fragments.
3. Rinse the mouth with cool water using a syringe or small cup if your pet allows. Do not force it.
4. Offer cool water to drink. A small spoon of plain yogurt, milk or a plain ice cube can soothe the burning if your pet tolerates dairy.
5. Do not try to make your pet vomit at home. Crystals re-irritate the throat and esophagus on the way back up.
6. Call your veterinarian, the ASPCA APCC at 888-426-4435 or the Pet Poison Helpline at 855-764-7661 for guidance specific to your pet’s size and the amount eaten.

If you see major facial or throat swelling, breathing changes, repeated forceful vomiting or any neurological signs, head straight to the nearest 24-hour emergency animal hospital. Bring a leaf sample or a clear photo of the plant, including the red and pink markings, so the team can confirm identification.

Veterinary Treatment

Most Red Aglaonema exposures are managed with supportive care. A typical plan may include:

• An oral exam to look for embedded plant fragments and ulcers.
• Mouth flushing with saline.
• Anti-nausea medication if vomiting is repeated.
• Subcutaneous or intravenous fluids if the pet is dehydrated.
• A bland diet for one or two days while the mouth heals.
• Pain medication if inflammation is significant; many pets do not need any.

Hospitalization is uncommon. Most pets are discharged the same day with a clear at-home recovery plan. Your veterinarian may also recommend baseline blood work for senior pets or pets with chronic conditions, even though the toxin itself is not systemic.

How to Keep Red Aglaonema Safely With Pets

You can keep a Red Aglaonema safely as long as you treat it like any moderately toxic plant. Start by relocating it.

Practical placement strategies:

• Use a tall plant stand, mantel or wall-mounted shelf well above leaping range.
• Skip placing the plant on a coffee table, side table or floor pot where pets pass.
• Keep the plant in a closed-off room, such as a home office, that the pet does not access.
• Use a heavy ceramic pot to prevent tipping if a paw bumps it.
• Wipe up any sap and dispose of pruning clippings in a closed bin.
• Discourage chewing by offering cats their own non-toxic plant such as pet-grade wheat grass.

If your pet has a history of plant chewing despite training, consider a non-toxic look-alike instead. Stromanthe Triostar and Calathea cultivars offer pink and red coloring without calcium oxalate. Our guide to cat-safe houseplants outlines safer options that pair well with Aglaonema-style decor.

Other Toxic Aroid Cousins to Recognize

Red Aglaonema is one cultivar group within the wide aroid family. Recognizing related plants helps you build safer zones in your own home and in the homes of friends. The chemistry is consistent across the genus, so the same first-aid steps apply if a pet bites any aroid.

Other toxic aroids that share the same calcium oxalate profile:

• Aglaonema Silver Bay, the silver-marbled cultivar.
• Philodendron species, from heart-leaf trailers to upright tree forms.
• Pink princess philodendron, with similar pink-and-green variegation.
• Monstera deliciosa and its cultivars.
• Pothos cultivars like marble queen, neon and snow queen.
• Dieffenbachia (dumb cane), the closest visual look-alike to Aglaonema.
• Peace lily (Spathiphyllum), common in offices.
• Caladium, often confused with red Aglaonema for its leaf colors.

Identifying the cultivar helps your veterinarian narrow the conversation, but the practical response is the same regardless of which aroid is involved.

When to Call Your Veterinarian

Call your veterinarian, the ASPCA Animal Poison Control Center at 888-426-4435, or the Pet Poison Helpline at 855-764-7661 any time a pet chews or swallows Red Aglaonema. Even small exposures benefit from professional advice because individual responses vary.

Head straight to an emergency vet if you see:

• Severe swelling of the tongue, lips or throat.
• Difficulty breathing or noisy breathing.
• Repeated forceful vomiting or blood in vomit.
• Collapse, weakness, tremors or seizures.
• Persistent refusal to drink water.

Have ready your pet’s species, breed, age and weight, the cultivar name (Aglaonema ‘Siam Red’, ‘Pink Splash’, ‘Red Valentine’ or whichever you own), an estimate of how much was eaten, how long ago, and any other possible exposures, including fertilizers, insecticides and other plants. A clear photo of the plant helps confirm identification quickly.

Adopting Around Toxic Houseplants

Plant-rich homes can welcome new pets safely with a little planning. Walk through every room at floor level looking for trailing leaves and low pots, move toxic aroids before the pet arrives, and keep poison-control numbers on the fridge. Browse adoptable cats and adoptable dogs through Walk Me Home Rescue to find a companion who fits your lifestyle, plant collection and pace.

Frequently Asked Questions

Are pink and red Aglaonema cultivars more toxic than green ones?

No. The pigments that produce the red and pink coloring are not toxic; the calcium oxalate crystals are present in both the colored and green tissue. Toxicity is identical across all Aglaonema cultivars.

Will my cat or dog die from biting a Siam Red or Red Valentine leaf?

Death is very rare. Toxicity is generally mild to moderate, causing oral pain, drooling and vomiting that resolve in a day or two with supportive care. Severe outcomes almost always involve very large ingestions or pre-existing health issues.

Is Red Aglaonema dangerous to birds, rabbits or guinea pigs as well?

Yes. Calcium oxalate crystals are irritating to the mouth and gut of any mammal or bird that bites them. Small herbivores can be especially affected because their bodies are smaller relative to the dose. Keep the plant out of reach of all pets, not just cats and dogs.

Should I induce vomiting at home if my pet ate a leaf?

No. Inducing vomiting can drive more crystals into the throat and esophagus and creates an aspiration risk. Call your veterinarian, the ASPCA APCC at 888-426-4435 or the Pet Poison Helpline at 855-764-7661 first.

Are there pet-safe plants that look similar to Red Aglaonema?

Yes. Stromanthe Triostar offers a striking pink-cream-and-green pattern, and several Calathea cultivars carry red undersides and pink veining. Both are listed by the ASPCA as non-toxic and make good visual replacements for the look of a Red Aglaonema.