The dog ate a grape will be okay dog ate a grape will not be okay. Dogs eating grapes, just one or two, is not a big deal, but eating more can be toxic. According to the report, the poisoning dose range of grapes is about 0.32 – 0.65 oz/kg, which means that every 20 pounds of dog eating only 3.2 ounces of grapes will cause poisoning. The study concluded that the minimum toxic dose of raisins is 0.1 oz/kg, which is about the amount of grapes a 20-pound dog would eat in 10-12 grapes. (The average adult dog eating 1 to 3 grapes will not show significant symptoms.) The concentration of toxins in raisins is about 4.5 times greater than the same weight of raw grapes. If a dog eats one or two grapes there is no need to be too nervous, but if it eats a large bunch of grapes, watch the dog closely for poisoning, and if so, rush to the hospital.
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