Yes, pneumothorax can be corrected, but the treatment depends on the underlying cause and severity of the condition. In mild cases, small pneumothoraxes can resolve on their own without any intervention. However, moderate to severe cases may require medical treatment, such as oxygen therapy, chest tube placement, and surgery. Therefore, seeking veterinary care as soon as possible is essential if you suspect your dog has a pneumothorax to prevent complications and increase the chances of a successful recovery.