🚨 If your cat is having seizures, difficulty breathing, or is unconscious — go to an emergency vet NOW. ASPCA: 888-426-4435
Emergency Tool · 200+ Substances · Dose-Based Risk Assessment

Cat Toxicity Calculator: Is It Toxic to My Cat?

Search any food, plant, medication, or household substance to get an instant cat toxicity risk level and step-by-step action guide.

⚠️ This tool provides general information only. It does not replace veterinary advice. When in doubt, call your vet or ASPCA Poison Control at 888-426-4435.

Search Cat Toxicity Database

🌸 Lily (True Lilies)

Plant

CRITICAL

Life-threatening emergency

True lilies cause acute kidney failure in cats through an unknown mechanism. Even tiny amounts such as pollen, a small leaf, or water from the vase can be fatal.

🚨 Do This Right Now

  • 1.Call your vet or ASPCA Poison Control at 888-426-4435 immediately.
  • 2.Do not wait for symptoms; kidney damage can begin before obvious signs.
  • 3.Bring a sample or photo of the plant.
  • 4.Treatment within 6 hours dramatically improves survival odds.

❌ Do Not

  • ·Do not wait to see if symptoms develop.
  • ·Do not induce vomiting without veterinary instruction.
  • ·Do not assume a small amount is safe.
Symptoms to watch for

Onset: Vomiting can begin within 0-12 hours; kidney failure can develop within 24-72 hours.

Early: Vomiting, Lethargy, Loss of appetite, Drooling

Severe: Kidney failure, Decreased urination, Seizures, Death

Delayed: Kidney failure signs may appear 24-72 hours after exposure.

How vets treat this

Aggressive IV fluid diuresis for 48-72 hours, decontamination if recent, and kidney function monitoring.

Why cats are uniquely sensitive

Cats are uniquely sensitive to true lily toxicity.

Call ASPCA

Emergency veterinary care required immediately.

Dose Calculator

Enter details for a more precise estimate when a known dose threshold exists.

Weight unit

Result updates instantly

CRITICAL

ANY amount of Lily (True Lilies) is potentially dangerous to cats.

My cat has symptoms but I do not know what they ate

Fast Reference

Most Dangerous Substances for Cats

These require immediate veterinary care. No waiting, no monitoring at home.

Toxic Foods

  • Lilies - any amount can cause kidney failure
  • Onion/Garlic - delayed anemia
  • Grapes/Raisins - kidney failure
  • Chocolate - cardiac and neurological toxicity

Toxic Medications

  • Acetaminophen - fatal even in tiny doses
  • Ibuprofen/NSAIDs - ulcers and kidney injury
  • Aspirin - cats metabolize slowly
  • Sleep aids - CNS depression

Toxic Plants

  • True lilies - kidney failure
  • Oleander - cardiac toxicity
  • Sago palm - liver failure
  • Dieffenbachia - oral and airway irritation

Household Products

  • Antifreeze - kidney failure
  • Permethrin dog flea products - seizures
  • Rodenticides - bleeding or seizures
  • Bleach and disinfectants - GI and airway injury

Symptoms

Signs of Poisoning in Cats

Emergency now

Seizures, difficulty breathing, unconsciousness, collapse, severe tremors.

Highly concerning

Brown gums, pale or yellow gums, facial swelling, red or brown urine.

Do not ignore

Vomiting, diarrhea, drooling, lethargy, poor appetite, drunk walking.

Action Plan

What to Do If Your Cat Is Poisoned

  1. 1. Remove your cat from the source.
  2. 2. Do not induce vomiting unless a vet tells you to.
  3. 3. Call your vet or ASPCA Poison Control.
  4. 4. Write down what, how much, and when.
  5. 5. Go to emergency care immediately for seizures, breathing trouble, or collapse.

Safe Reference

Substances That Are Safe for Cats

  • Catnip
  • Blueberries in small amounts
  • Plain cooked chicken
  • Plain pumpkin
  • Commercial cat treats used as directed
ASPCAVet Near Me

Emergency context

Use toxicity results as a triage aid, then contact professional help

Toxin exposure pages need to be direct because cats can deteriorate quickly and many dangerous substances have no safe home remedy. The calculator can help organize substance, dose, weight, symptoms, and risk level, but it is not a substitute for a veterinarian or poison-control professional.

Result guide

How to act on a toxicity result

The risk level should decide urgency, not whether to seek help at all. For unknown dose, known dangerous substances, or active symptoms, it is safer to call immediately and share the calculator inputs with the professional who advises you.

  • Identify the exact substance, brand, strength, and amount if possible.
  • Save packaging, plant pieces, medication bottles, or photos for the clinic.
  • Use the cat's current weight because dose per kg changes risk.
  • Do not induce vomiting or give home treatments unless a professional tells you to.

Unknown dose is still actionable

If you cannot estimate the dose, the safest next step is to treat the uncertainty itself as important information and call for guidance.

Symptoms can lag behind damage

Some toxins cause internal injury before obvious symptoms appear, so a cat seeming normal does not always mean the exposure is safe.

Cats are not small dogs

Feline metabolism makes several human and dog-safe products dangerous for cats, especially certain medications, essential oils, and plants.

Triage decisions

Decide what information to gather before calling

For toxin exposure, the next useful action is usually faster identification, not more browsing. The calculator helps organize the facts a professional will ask for: substance, amount, timing, weight, and symptoms.

Known dangerous toxin

Lilies, high-risk medications, certain essential oils, rodenticides, and concentrated chemicals should be treated as urgent even if the cat currently looks normal.

Call a veterinarian or poison-control service now and keep the product or plant sample.

Unknown amount

Uncertainty is itself important. Professionals can give better guidance when you explain the maximum possible exposure and time window.

Estimate the worst plausible amount, save packaging, and call for triage.

Symptoms present

Vomiting, tremors, weakness, breathing trouble, collapse, drooling, seizures, or painful behavior should override any low-confidence estimate.

Seek emergency veterinary care instead of trying home treatment.

Same minute

Use the page quickly, then call; do not keep recalculating while symptoms develop.

During transport

Bring product labels, photos, plant pieces, medication bottles, or vomit samples if safe.

After advice

Follow the professional's monitoring window because symptoms can be delayed.

What to do before and during the call

1

Move the cat away from exposure

Prevent more licking, chewing, inhalation, or contact while you gather details.

2

Collect evidence

Bring the label, photo, plant sample, pill bottle, or product name so the clinic can identify the active ingredient.

3

Share dose and timing

Tell the professional the amount, unit, time since exposure, body weight, and any symptoms.

FAQ

Frequently Asked Questions About Cat Toxicity

Are lilies toxic to cats?

Yes. True lilies are extremely toxic to cats and represent a true emergency. Even tiny amounts, including pollen or vase water, can cause acute kidney failure. If your cat had any lily exposure, call your vet or ASPCA Poison Control at 888-426-4435 immediately.

Is chocolate toxic to cats?

Yes. Chocolate contains theobromine and caffeine, both toxic to cats. Dark chocolate and baking chocolate are most dangerous. Symptoms can include vomiting, diarrhea, rapid breathing, tremors, seizures, and abnormal heart rhythm.

Is Tylenol toxic to cats?

Yes. Acetaminophen, also called Tylenol or paracetamol, is extremely toxic to cats. A single regular-strength tablet can be fatal. This is a life-threatening emergency that needs immediate veterinary care.

Are onions and garlic toxic to cats?

Yes. Onions, garlic, leeks, shallots, chives, and powders made from them can damage feline red blood cells and cause hemolytic anemia. Symptoms can be delayed for several days.

What should I do if my cat ate something toxic?

Remove your cat from the source, do not induce vomiting unless a veterinarian tells you to, and call your vet or ASPCA Animal Poison Control Center at 888-426-4435. If your cat is having seizures, difficulty breathing, or is unconscious, go to an emergency vet immediately.

Is xylitol toxic to cats?

Xylitol is extremely toxic to dogs. Cats appear less sensitive, but the evidence is incomplete, so xylitol should still be treated as potentially concerning. Contact your veterinarian if your cat ingests xylitol.

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