According to a specialist from the Arizona Poison and Drug Information Center, most dogs display only mild to moderate symptoms when stung by a scorpion. These symptoms include limping, head shaking and rubbing, pawing or licking the sting site.
Key News, a news source in the Florida keys, reports that some dogs eat scorpions and are stung in the mouth. This leads to coughing, hacking and vomiting. The Arizona Poison and Drug Information Center states that serious symptoms, including tremors, restlessness and changes in breathing are more often seen in small dogs than large dogs. No matter the severity of the symptom, the average time for dogs to fully recover from a sting is eight hours, according to a study from the Arizona Poison and Drug Information Center.