🔴 Severe🐾 Dogs & CatsFood
Grapes & Raisins
Kidney failure risk in both dogs and cats — the toxic compound is unknown, but even a single grape or raisin can be deadly. No safe threshold has been established, so treat any exposure as an emergency.
🚨 If your pet has ingested a toxin — call ASPCA Poison Control: (888) 426-4435 or your emergency vet immediately.
Pet Toxins & Poisons Guide
40+ common household, food, plant, and yard hazards for dogs & cats
Many everyday items in your home, yard, and garden can be life-threatening to dogs and cats — often ones you'd never suspect. This guide covers the most common household toxins, what symptoms to watch for, and what to do if your pet is exposed.
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Toxic Foods
Many 'people foods' are safe for humans but dangerous for pets — here are the most important ones to keep out of reach.
🔴 Severe🐕 DogsFood
Xylitol (Artificial Sweetener)
Found in sugar-free gum, some peanut butters, candy, baked goods, and certain toothpastes. Xylitol causes a rapid insulin spike leading to hypoglycemia and, in larger doses, acute liver failure in dogs.
🔴 Severe🐾 Dogs & CatsFood
Chocolate
Contains theobromine and caffeine, both toxic to pets. Dark chocolate and baker's chocolate are the most dangerous — a small square can be a lethal dose for a small dog. Milk chocolate is less concentrated but still dangerous.
🔴 Severe🐾 Dogs & CatsFood
Onions, Garlic & Chives
All forms — raw, cooked, or powdered — destroy red blood cells, causing hemolytic anemia. Garlic is roughly 5x more toxic per body weight than onions. Even small amounts of garlic powder in baby food or seasoning can be dangerous.
🟡 Moderate🐾 Dogs & CatsFood
Avocado
Contains persin in the flesh, skin, leaves, and pit. More dangerous for birds and rabbits, but dogs and cats can experience vomiting and diarrhea. The large pit is also a serious choking and obstruction hazard.
🔴 Severe🐕 DogsFood
Macadamia Nuts
The mechanism of toxicity is unknown but well-established. As few as 6 macadamia nuts can cause significant toxicity in a medium-sized dog. Symptoms typically appear within 12 hours and can last up to 48 hours.
🔴 Severe🐾 Dogs & CatsFood
Alcohol
Even small amounts cause severe toxicity in pets. Sources include beer, wine, spirits, mouthwash, and fermented fruit. Pets metabolize alcohol much more slowly than humans, and there is no safe dose.
🔴 Severe🐕 DogsFood
Raw Yeast Dough
Uncooked yeast dough expands inside the warm stomach, causing painful bloating and a risk of gastric dilatation. As it ferments, it also produces alcohol, causing ethanol poisoning on top of the mechanical hazard.
🔴 Severe🐾 Dogs & CatsFood
Caffeine
Found in coffee, tea, energy drinks, diet pills, and some over-the-counter medications. Caffeine poisoning can be fatal in pets, and there is no antidote. Even coffee grounds and tea bags can be dangerous if ingested.
🟡 Moderate🐾 Dogs & CatsFood
Salt (Excessive)
Sodium ion poisoning can occur from large amounts of salt — chips, popcorn, pretzels, soy sauce, and even homemade playdough (which is very high in salt) are all risks. Excessive salt intake causes severe electrolyte imbalances.
🟠 Caution🐾 Dogs & CatsFood
Cooked Bones
Cooked bones — especially chicken, pork, and fish bones — become brittle and splinter easily. Shards can puncture the mouth, throat, stomach, or intestines. Raw bones from a reputable source are generally safer, but still carry risk.
Toxic Plants
Houseplants and garden plants are a leading cause of pet poisoning. These are the most dangerous ones to know.
🔴 Severe🐈 CatsPlant
Lilies (All Types)
One of the most dangerous plants for cats. Easter lily, Tiger lily, Day lily, and Asiatic lily are all deadly — even eating a few petals, licking pollen off their fur, or drinking water from the vase can cause acute kidney failure.
Any lily exposure in cats is a medical emergency. Seek vet care immediately — do not wait for symptoms.
🔴 Severe🐾 Dogs & CatsPlant
Sago Palm
All parts of the sago palm are toxic, but the seeds (nuts) are the most dangerous. Even one seed can cause severe liver failure. Sago palms are popular ornamental plants in warm climates and are found in many homes and gardens.
🔴 Severe🐾 Dogs & CatsPlant
Oleander
All parts of the oleander plant contain cardiac glycosides that disrupt the normal electrical activity of the heart. Even small amounts — including water in a vase that held oleander — can be lethal.
🔴 Severe🐾 Dogs & CatsPlant
Azalea / Rhododendron
Grayanotoxins in azaleas and rhododendrons interfere with sodium channels in the body. Eating just a few leaves can cause severe poisoning. These are extremely common ornamental plants in gardens across North America.
🟡 Moderate🐾 Dogs & CatsPlant
Dieffenbachia (Dumb Cane)
One of the most common houseplants, dieffenbachia contains insoluble calcium oxalate crystals that cause intense burning and swelling in the mouth and throat. Rarely fatal, but can cause enough throat swelling to interfere with breathing.
🟡 Moderate🐾 Dogs & CatsPlant
Pothos / Golden Pothos
Extremely common in households and offices, pothos contains calcium oxalate crystals that cause immediate oral burning and irritation. Cats especially tend to chew on hanging plants. Keep well out of reach or replace with pet-safe alternatives.
🟡 Moderate🐾 Dogs & CatsPlant
Peace Lily
Peace lilies contain calcium oxalate crystals causing oral irritation, and in cats they can also cause kidney damage with larger ingestions. Despite the name, peace lilies are not true lilies — but they're still toxic and should be kept away from pets.
🟡 Moderate🐾 Dogs & CatsPlant
Tulips & Hyacinths
The bulbs contain the highest concentration of toxins — a major risk in spring when bulbs are being planted or stored. Cats and dogs that dig up or chew on bulbs can experience significant GI distress and, with large amounts, more serious effects.
🔴 Severe🐾 Dogs & CatsPlant
Yew
Nearly all parts of the yew plant (except the soft red flesh around the berry) contain taxine alkaloids that affect the heart and central nervous system. Yew poisoning is notable for causing sudden death with little warning. A very common landscaping shrub.
🟡 Moderate🐾 Dogs & CatsPlant
Aloe Vera
The latex layer of aloe vera (just under the skin) contains saponins and anthraquinones that are toxic to pets. The clear inner gel in very small amounts is generally low-risk, but the plant as a whole should be kept out of reach. Commonly kept for human first aid.
Household Products
Everyday items under your sink, in your garage, or on your bathroom counter can be life-threatening to pets.
🔴 Severe🐾 Dogs & CatsHousehold
Bleach & Household Cleaners
Including Lysol, Pine-Sol, bathroom cleaners, and disinfectant sprays. Products containing chlorine or phenols are particularly dangerous — phenol-based cleaners (common in many "natural" cleaners) are especially toxic to cats, who cannot metabolize phenols.
🔴 Severe🐾 Dogs & CatsHousehold
Antifreeze (Ethylene Glycol)
Its sweet taste makes antifreeze attractive to pets. It's one of the most common and deadly pet poisonings. As little as 1.5 mL/kg can kill a cat — a teaspoon is lethal. Found in car antifreeze, de-icing products, and some hydraulic brake fluids.
Time-critical — treatment must begin within 3–4 hours of ingestion for cats, within 8–12 hours for dogs.
🔴 Severe🐾 Dogs & CatsHousehold
Rat Poison / Rodenticide
Multiple types exist with different mechanisms: anticoagulants (prevent blood clotting), bromethalin (neurotoxin), and cholecalciferol (causes dangerous calcium spike). Anticoagulant rodenticides may not show symptoms for several days after ingestion.
🔴 Severe🐾 Dogs & CatsHousehold
Insecticides & Flea Products
Permethrin-based flea and tick products labeled for dogs are SEVERELY toxic to cats. Even small amounts of permethrin can cause life-threatening neurological symptoms in cats within hours. Always read labels carefully before applying any topical product.
Never apply dog flea/tick products to cats. If accidental exposure occurs, bathe the cat immediately and seek emergency vet care.
🔴 Severe🐾 Dogs & CatsHousehold
Batteries
Batteries contain zinc, lead, and highly alkaline or acidic materials. If punctured or swallowed, they cause severe chemical burns to the mouth, esophagus, and stomach. Button batteries are especially dangerous and can cause perforation rapidly.
🟡 Moderate🐾 Dogs & CatsHousehold
Fabric Softener Sheets
Dryer sheets and liquid fabric softeners contain anionic detergents that cause irritation and ulceration of the mouth and gastrointestinal tract. Some cats are attracted to the scent and may chew on used dryer sheets from the laundry basket.
🔴 Severe🐾 Dogs & CatsHousehold
Mothballs
Contain either naphthalene or paradichlorobenzene — both cause serious liver damage and hemolytic anemia. Cats groom themselves and can ingest toxins after walking through areas treated with mothball vapors. The vapors alone can cause respiratory irritation.
🟠 Caution🐾 Dogs & CatsHousehold
Silica Gel Packets
The silica beads themselves have generally low toxicity — the "Do Not Eat" warning is aimed at humans, especially children. However, ingesting multiple packets can cause GI upset and potential obstruction, particularly in small dogs or cats.
🔴 Severe🐾 Dogs & CatsHousehold
Cigarettes & Nicotine
Nicotine is rapidly absorbed and highly toxic to pets. Cigarette butts, cigars, nicotine patches, gum, and vaping cartridges (e-cigarettes) are all serious hazards. A single cigarette butt contains enough nicotine to cause significant toxicity in a small dog or cat.
Medications
Human medications are one of the top causes of accidental pet poisoning. Never give your pet human meds without vet guidance.
🔴 Severe🐾 Dogs & CatsMedication
Ibuprofen & NSAIDs
Advil, Motrin, Aleve, and other NSAIDs cause severe gastrointestinal ulceration and kidney failure in both dogs and cats. Cats are especially sensitive. Even a single regular-strength ibuprofen tablet can be toxic to a medium-sized dog.
🔴 Severe🐾 Dogs & CatsMedication
Acetaminophen (Tylenol)
Cats lack the enzyme needed to process acetaminophen, making even one regular-strength tablet (325 mg) potentially fatal. In cats, it destroys red blood cells and causes methemoglobinemia. In dogs, it causes liver damage. Never give Tylenol to a pet.
🔴 Severe🐾 Dogs & CatsMedication
Antidepressants
SSRIs and SNRIs (Prozac, Zoloft, Cymbalta, Effexor) cause serotonin syndrome in pets — a dangerous excess of serotonin. Pets are attracted to the pill coatings. Even a single dropped pill can cause serious symptoms in a cat or small dog.
🔴 Severe🐕 DogsMedication
ADHD Medications
Stimulant medications like Adderall, Ritalin, and Vyvanse are particularly dangerous for dogs. Being amphetamines, they cause severe stimulant overdose symptoms including hyperthermia, cardiac arrhythmias, and seizures even in small doses.
🔴 Severe🐾 Dogs & CatsMedication
Sleep Aids & Benzodiazepines
Ambien, Xanax, Valium, and similar drugs cause unpredictable reactions in pets — unlike humans, many pets experience paradoxical excitation (agitation, aggression) rather than sedation. Large doses cause dangerous respiratory depression and coma.
Garden & Yard
Your yard and garden contain more hazards than you might think — especially for dogs who love to roam and sniff.
🟡 Moderate🐾 Dogs & CatsGarden/Yard
Fertilizers
Different fertilizers carry different risks. Iron-containing fertilizers can cause iron toxicity. Bone meal and blood meal — organic options — smell appealing to dogs and can cause severe pancreatitis if eaten in bulk. Organophosphate-based products are neurotoxic.
🔴 Severe🐾 Dogs & CatsGarden/Yard
Mushrooms (Wild)
While most wild mushrooms cause only GI upset, deadly species like Amanita phalloides (Death Cap) and Amanita muscaria cause liver and kidney failure with a high fatality rate. Dogs will eat almost anything — remove any wild mushrooms from your yard immediately.
If you cannot identify the mushroom, treat it as potentially deadly. Bring a sample to the vet in a paper bag.
🔴 Severe🐕 DogsGarden/Yard
Compost & Moldy Food
Compost piles and any moldy food waste contain mycotoxins produced by mold — particularly tremorogenic mycotoxins that cause severe muscle tremors and seizures. Dogs are especially drawn to the smell of compost. Always use a locked, pet-proof compost bin.
🔴 Severe🐕 DogsGarden/Yard
Cocoa Mulch
Cocoa shell mulch is a popular garden product, but it contains theobromine — the same toxin found in chocolate. Dogs are attracted to its chocolate scent and may eat large quantities. Avoid using cocoa mulch in gardens accessible to dogs.
🟡 Moderate🐾 Dogs & CatsGarden/Yard
Herbicides & Pesticides
Severity varies widely by product type. Many common herbicides are primarily GI irritants, while organophosphate and carbamate pesticides can cause severe neurological toxicity. Always follow label instructions on re-entry times and keep pets away from treated areas.
Emergency Resources
If you suspect your pet has ingested a toxin, act fast — time is critical.
ASPCA charges a $100 consultation fee. The Pet Poison Helpline (855-764-7661) is an alternative. Your local emergency vet is always an option.