>>11722709Dogs metabolize Theobromine much slower than humans. Due to this, chocolate is the most common cause of canine poisoning. It can cause hyperactivity, tremors, high blood pressure, a rapid heart rate, seizures, respiratory failure, and cardiac arrest. Even a small amount can cause vomiting and diarrhea. Different kinds of chocolate contain different amounts of Theobromine.
The case for grapes killing dogs is somewhat shakier. Grapes are known to cause sudden kidney failure in dogs. However, the mechanism of toxicity is unknown, some dogs seem to be immune, and the rate of fatality seems to be lower than in chocolate.
Five minutes on google isn't really that much to ask, is it?
