Aspirin and Pets
Find out if Aspirin is toxic to dogs and cats.
Think your pet ate something toxic?
Call ASPCA Animal Poison Control Center: (888) 426-4435 or view emergency guide
Aspirin is a common over-the-counter pain reliever for people, but it can be risky for pets. Dogs may tolerate aspirin only under strict veterinary guidance because the dose window is narrow and the wrong amount can cause stomach ulcers, internal bleeding, kidney damage, or liver problems. Cats are far more sensitive: they lack key enzymes needed to break down aspirin, so doses that seem tiny can quickly become fatal.
Poisoning usually happens when a pet accidentally chews a bottle of aspirin, eats dropped tablets, or is given human medication by a well-meaning owner. Chewable and coated tablets are often flavored or palatable, which makes them even more appealing to dogs. Even a single dose of a product intended for people can be too much for a cat or a small dog.
If you think your pet has eaten aspirin, treat it as an emergency. Call your veterinarian or a pet poison control hotline right away, and do not try to make your pet vomit unless a professional tells you to. Keep all human medications in a secure cabinet, away from curious pets, and never give your dog or cat aspirin without explicit instructions from a veterinarian.
The safest choice is to use pain relievers specifically formulated and dosed for pets. Your veterinarian can recommend a veterinary-approved pain-management plan that controls discomfort while protecting your pet’s stomach, kidneys, and liver.
Is Aspirin Toxic to Dogs?
Aspirin is not recommended for routine home use in dogs. It may be prescribed or used short-term under direct veterinary supervision only, because dosing errors or long-term use can cause serious stomach ulcers, bleeding, kidney injury, or liver damage.
Is Aspirin Toxic to Cats?
Cats are extremely sensitive to aspirin. Their bodies clear salicylates very slowly, so even small doses can cause severe, life-threatening toxicity, including GI bleeding, seizures, respiratory distress, and death.
Active Ingredients
- acetylsalicylic acid
Common Brand Names
- Bayer
- Ecotrin
- Bufferin
- Ascriptin
Dosage Form
tabletchewable tabletenteric-coated tabletpowder
Common Uses
- pain relief
- fever reduction
- anti-inflammatory
Toxic Ingredients
- acetylsalicylic acid
Symptoms to Watch For
- vomiting
- diarrhea
- loss of appetite
- abdominal pain
- lethargy
- black or tarry stools
- bleeding gums or bruising
- rapid breathing
- tremors or seizures
- coma
What If My Pet Was Exposed to Aspirin?
Contact your veterinarian or a pet poison control center immediately. Do not give aspirin to a cat. Do not induce vomiting unless instructed by a professional. Bring the medication bottle and estimate how much was ingested.
Sources
Vet's Note
PetPilot provides general information for educational purposes. While we reference authoritative veterinary organizations, this page has not been individually reviewed by a veterinarian for your specific pet. Individual animals may react differently based on age, weight, breed, health conditions, and amount consumed. Always consult your veterinarian or a poison control center for personalized advice, especially if your pet is ill, injured, pregnant, nursing, or on medication.