If the dog is mildly poisoned, it will not die. It will take about 2 to 3 days to recover. If the dog is moderately poisoned, it will die in about 1 to 2 days. If the dog is severely poisoned, it will die in about a few hours. When a dog is found to be poisoned, treatment measures need to be taken immediately. In serious cases, it needs to be sent to the hospital for prompt treatment. There is a high hope of rescue. After the dog is poisoned, you should feed the dog a lot of water to facilitate the elimination of toxins from the body.