✕ Toxic

Coffee

Coffee is made from coffee beans and is commonly used as both a drink and a flavoring ingredient. It is not safe for cats. The main harmful substance in coffee is caffeine, a methylxanthine stimulant, so cats should not be allowed to consume or lick any coffee-containing product. Cats break down caffeine much more slowly than humans do. Because of this, even a small amount can have a noticeable effect on their body. Caffeine overstimulates a cat’s nervous system and heart, which can lead to unusual excitement, a fast heartbeat, and in more serious cases, an irregular heart rhythm. If a cat drinks or eats coffee, possible signs include restlessness, hyperactivity, vomiting, diarrhea, drooling, a rapid heart rate, fast breathing, and tremors. Brewed coffee, espresso, coffee grounds, instant coffee powder, and coffee-flavored foods may all contain caffeine. Keep coffee cups, grounds, and instant coffee products out of your cat’s reach. If you think your cat has ingested any coffee product, contact a veterinarian promptly.

Important Notes

Symptoms: Vomiting and restlessness initially; rapidly progressing to rapid heart rate, hypertension, muscle tremors, hyperthermia, and in severe cases seizures and cardiac arrhythmia.

Coffee grounds are particularly dangerous: Dry grounds are highly concentrated and appealing to cats that investigate compost or kitchen waste.

Onset is fast: Symptoms can begin within 30–60 minutes of ingestion.

Action: Seek veterinary care immediately for any coffee ingestion — even a few licks of strong coffee warrants a call to a vet.

Potentially Toxic Parts

Entire food

Stem

Powder

Possible Symptoms Reported in Cats

Severe Neurological Overstimulation

Neurological · 2 to 12 hours (progresses as the caffeine is fully absorbed into the bloodstream)

Cardiovascular Dysfunction

Cardiac · 2 to 12 hours

Respiratory Distress

Respiratory · 6 to 12 hours (progressing in the mid to late stages of toxicosis)

Hyperthermia

Neurological · 6 to 12 hours

Gastrointestinal Upset

Gastrointestinal · 2 to 4 hours

Increased Thirst and Urination

Renal · 2 to 4 hours (often following the initial gastrointestinal signs)

Disclaimer: This summary was compiled from multiple sources and is for informational use only. It is not a diagnosis or treatment plan. Toxicity can vary based on the substance, amount, plant part, and individual cat. If you think your cat may have been exposed to a toxic substance, contact a veterinarian right away.