iirc it's the concentration of tartaric acid that's toxic to dogs. You got lucky your dog didn't like grapes! A lot of dogs will just eat them, btw, so don't th

iirc it's the concentration of tartaric acid that's toxic to dogs. You got lucky your dog didn't like grapes! A lot of dogs will just eat them, btw, so don't think they all will instinctively avoid grapes.