Pothos and dogs: ingestion risks and emergencies

Yes, the pothos is toxic to dogs. Toxicity is the same as for cats (calcium oxalate crystals) but manifests slightly differently depending on the animal’s temperament and size. This article details what to know and do.

This information is reliable but never replaces a veterinarian’s opinion in case of an incident.

Mechanism: calcium oxalates

The pothos contains microscopic calcium oxalate crystals shaped like needles, called raphides, in all its tissues. When the dog bites, its teeth release these crystals, which plant themselves in the mucous membranes of mouth, lips and throat.

Immediate effect: stabbing pain, burning, abundant salivation. Unpleasant but rarely fatal for an adult dog.

Differences between dogs and cats

Several dog particularities to know.

The dog is bigger. For the same absolute dose, a 15 kg dog handles it better than a 4 kg cat. This explains why dogs less frequently develop serious intoxications.

The dog eats more before stopping. Where a cat tastes, feels pain and retreats, some dogs (especially very greedy breeds or puppies) can swallow several bites before reacting.

The dog regurgitates more easily. Protective: the animal quickly evacuates part of the dose.

Puppies are more vulnerable. Small body mass, curiosity, low learning of dangers, exploratory chewing: risky combination.

Ingestion symptoms

Within minutes after a bite, the dog shows:

Abundant salivation. Drool dripping, wetting the muzzle. Most visible and earliest sign.

Muzzle rubbing. The dog wipes its face on the floor, paws or a couch.

Coughing and throat clearing if crystals reached deeper.

Unusual vocalizations: whining, short cries. The pain is real.

Refusal to eat for a few hours, sometimes until the next day.

Occasional vomiting within the hour following ingestion, if several mouthfuls were swallowed.

In more serious cases (rare but watch for): visible swelling of lips, tongue or muzzle, breathing difficulty (pale or bluish gums), repeated vomiting (more than 3 in 2 hours), deep apathy persisting beyond 4-6 hours, intense diarrhea.

These symptoms are veterinary emergency signals.

What to do immediately

Remove what remains in its mouth, with gloves, open the jaw and extract fragments.

Rinse its mouth with fresh water. A needleless syringe or a wet cloth slid on the gums suffices.

Offer plenty to drink. Water dilutes the remaining oxalates and helps eliminate them.

Offer a soft meal (low fat, low spice) within the next 2-3 hours.

Watch without leaving for the next 4-6 hours. Memorize the time, symptoms, their evolution.

Never induce vomiting with salt water or hydrogen peroxide. Dangerous (aspiration risk) and ineffective against already-embedded oxalates.

Call a vet if symptoms worsen or your dog is in the at-risk group (puppy, very small dog, elderly animal, unusual behavior).

Useful numbers

US: ASPCA Animal Poison Control 1-888-426-4435 (24/7, paid). Canada: Pet Poison Helpline 1-855-764-7661. UK: Animal PoisonLine 01202 509 000.

For follow-up, your regular vet remains the best reference.

Dog-pothos cohabitation

Three approaches depending on your dog’s temperament.

The disinterested dog (majority of balanced adults). The pothos can stay accessible. A firm “no” the first time is enough, the smell and taste of oxalates do the rest.

The curious or young dog. Raise the plant. A high table or piece of furniture is enough for most dogs (unlike cats that jump everywhere). The pothos is particularly suitable for hanging: ceiling-mounted, totally out of reach.

The puppy or compulsive chewer. You must choose. Either the pothos lives in a room the dog has no access to, or you give it to someone without animals. Forced cohabitation with a dog that eats everything always ends in an incident.

Safe alternatives

If you want the trailing vine aesthetic without the risk, these plants are non-toxic to dogs: Spider plant (Chlorophytum, ultra easy, trailing), Calathea orbifolia, Boston fern, Pilea peperomioides, Hoya carnosa, Maranta leuconeura.

Clear advantage: no stress when you leave your dog alone in the room.

See also pothos toxic to cats and our complete pothos sheet.