TL;DR: Electrical cord injuries are life-threatening emergencies that cause severe mouth burns and delayed lung fluid buildup. You must seek immediate veterinary care even if your dog appears normal, as fatal respiratory issues can develop hours after the shock.
What happens to my dog's body after biting an electrical cord?
An electrical cord injury occurs when a dog bites through the protective insulation of a wire, allowing a live current to pass through their tissues. This most commonly affects puppies who are teething or curious, but it can happen to any dog. The current causes immediate thermal burns at the point of contact, typically the mouth and tongue, and can disrupt the electrical signals in the heart and lungs.
Is it a veterinary emergency if my dog gets an electrical shock?
- Urgency Level: High. This is a critical emergency; seek veterinary care immediately.
- Even if your dog appears normal now, they are at high risk for life-threatening complications.
- The electrical surge often causes non-cardiogenic pulmonary edema, a dangerous condition where the lungs fill with fluid.
- This lung damage can develop slowly over several hours, meaning a dog that looks fine could stop breathing later in the day.
How does taking a photo of the scene help the vet triage my dog?
- If you can safely do so without touching a live current, take a photo of the chewed wire to help the vet estimate the shock's intensity.
- Photos of burns inside your dog's mouth allow the triage staff to assess the severity of tissue damage.
- Sharing these images helps the veterinary team prepare the necessary life-saving equipment before you even arrive at the clinic.
Clinical Context (Merck Veterinary Manual)
In dogs that have chewed on electrical cords, initial triage involves assessing for systemic involvement, which may be life-threatening, such as noncardiogenic pulmonary edema. Emergency assessment should include determining if the site is safe from further electrification. The history should include whether the incident was observed; affected animals may hesitate to eat or drink, drool, and resent handling. Oral examination may reveal mild discomfort to destructive injuries with tissue loss and scarring, most commonly a linear scar across the dorsum of the tongue. Lip commissures may have scars or wounds, and adjacent carnassial teeth may be discolored and eventually require endodontic treatment. Animals presenting with burns warrant immediate transfer to the treatment area.
Chapter: Dentistry
Source: The Merck Veterinary Manual, 11th Edition (Page 366)