If your dog is hit by a car, bring him to a veterinary care professional right away but be careful moving him. Try to place him on a sturdy surface such as wood or cardboard to keep his body still so you do not cause more injury. He may have a spinal injury so it is important to keep his back and neck as still as possible. If your dog does not seem injured and he gets up and walks away, it is still a good idea to take him to a veterinarian. Dogs can have internal damage and bleeding that may cause no outward symptoms until it is really serious, and by then it may be too late for successful treatment.

Vehicular trauma in dogs is common in dogs who are allowed to run outdoors unattended. The risk is proven to be higher in those who have not been neutered. For indoor dogs, the risk is low, but even when you keep your dog inside, accidents can happen. Your pet can get out the door, escape his enclosure when let outside, or get away from you while you are walking him. Vehicular trauma is an injury sustained when your dog is hit by a moving vehicle. This may be a truck, car, motorcycle, train, or even a snow plow. The injuries sustained may be minor or life-threatening, depending on the case. Some of the types of injuries you will see in vehicular trauma are broken bones, head injury, internal bleeding, strained muscles, and abdominal or chest injuries.

The symptoms of vehicular trauma depend on which part of the body is injured in the accident. Some of the most common signs of vehicular trauma include:

The cause of vehicular trauma is being hit by a vehicle of any kind. The risk increases with those dogs who are allowed to roam outdoors unattended. Injuries ranging from mild to severe can occur, with broken bones being the most frequent result of impact. The risk of internal injury must not be ignored when collision with a vehicle occurs.

The veterinarian will first perform a thorough and detailed physical examination, checking the neck and spine first to look for any sign of fractures or damage to the spine. The examination will include palpation and auscultation of all main organs and muscles with special attention to the abdomen and head, looking for signs of internal injury and broken bones. 

To determine if your dog has any internal injuries, the best thing is to get radiographs (x-rays), CT scan, and ultrasound or possibly an MRI, if needed. Blood tests will be done to check for internal bleeding and shock. A packed cell volume, blood urea nitrogen, and blood glucose are all standard tests for emergency situations such as vehicular trauma.

The treatment for vehicular trauma depends on the type and area of the injury.

Many patients will need intravenous fluids, pain relief and anti-inflammatories. Any superficial cuts will be cleaned and may need to be dressed.

Broken bones will be stabilized and then a cast or splint will be applied if needed. Treatment may also include surgery in some cases to place screws, pins, or plates for stabilization. 

Most lacerations can be cleaned and treated immediately with pressure and a bandage. Deep or serious lacerations may include stitches, which requires sedation.

Any kind of major internal bleeding will require surgery to determine the cause and perform a repair. Intravenous fluids and blood transfusions are also commonly needed.

In some cases, your veterinarian may need to repair a collapsed lung or drain fluid from around the heart. Any kind of thoracic trauma may require surgical repair and hospitalization. Lung contusions require supportive care as they resolve.

If your dog has a laceration or hernia in the abdomen, surgery to repair the damage is usually needed right away. This includes any damage to the liver or spleen, or a hernia.

The prognosis of vehicular trauma depends on the severity of the injury and how soon you are able to get treatment for your dog. If you get immediate veterinary care, the chances are good that your dog will be fine. Continue to monitor him for abnormal behavior or appetite and call your veterinary care provider if you have any questions or concerns.