chocolate (Cocoa)

The information contained here is for general purposes only and is not a substitute for advice from your veterinarian. Always check with you dog or cat’s veterinarian for their specific guidance for your animals.

There are two phone consult toxicology services, both offering consultations 24/7 and run by veterinarians:

Chocolate toxicosis is the syndrome resulting from ingestion of excessive amounts of methylxanthine-containing chocolate products. (theobromine and caffeine)

*A lethal dose of both caffeine and theobromine is reportedly 100–200 mg/kg, (45-90 mg per lb) but severe signs and deaths may occur at much lower dosages, and individual sensitivity varies. *(Kills 50%) [1]

There are no diagnostic tests for chocolate intoxication.

Clinical signs of chocolate toxicosis usually occur within 6–12 hours of ingestion. Clinical signs may persist for up to 72 hours in severe cases.

Clinical effects include:

  • Vomiting

  • Restlessness

  • Agitation

  • Excessive thirst

  • Hyperthermia (abnormally high body temperature)

  • Tachycardia (increased heart rate)

  • and, in severe cases, seizures.

Mild signs (vomiting, diarrhea, excessive thirst) 9 mg per lb  (20 mg/kg)

Cardiotoxic (heart dysfunction ) 18 mg per lb  (40–50 mg/kg)

Seizures may occur at dosages 27 mg per lb   (≥60 mg/kg)

“It takes nearly four days for the effects of chocolate to work its way out of a dog’s system. If the chocolate was only just eaten, it is possible to induce vomiting; otherwise, hospitalization and support are needed.”

Getting the Facts Straight