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Carbon Monoxide and Pets

white dog sleepingDo you ever consider the dangers of carbon monoxide to pets? One of our Facebook fans recently shared with us a tragic story of 12 pet birds lost to carbon monoxide poisoning. The heartbreaking tale also involved the family dog who, after some time has made a full recovery. This blog post is intended to raise awareness of the dangers of Carbon Monoxide poisoning not just for people, but for the pets we keep as well. Most cases of carbon monoxide toxicity in pets occur, sadly, due to human error, and the results can be devastating.  A dog left in an enclosed garage with a running automobile, for example, can be exposed to toxic levels of carbon monoxide in about ten minutes. But animals may also exposed to toxic levels of carbon monoxide when they are trapped in a building that is on fire, or when a slow leak from a heating system amongst other causes. It’s important to make yourself familiar with easy ways to prevent exposure, as well as a course of action should evacuation or medical attention be necessary.

What is Carbon Monoxide?

Carbon monoxide is an odorless, colorless, non-irritating gas produced by the incomplete combustion of carbon fuels. It is potentially toxic and may even cause death. Carbon monoxide may be produced by unventilated kerosene or propane heaters, gasoline engines, automobile exhaust, or fumes from carbon-based fuel heating systems. When inhaled, Carbon Monoxide gas is readily absorbed into the bloodstream, combining with hemoglobin and rapidly reducing oxygen delivery to the body,leading to decreased oxygen to the brain and heart. Prolonged exposure to carbon monoxide leads to hypoxemia (critically low blood oxygen levels) and eventually death.

What are the signs and symptoms of Carbon Monoxide poisoning?

Depending upon the concentration and duration of exposure of carbon monoxide, the symptoms may manifest quickly, or gradually over a period of prolonged exposure. Some pets, such as birds, are more sensitive to Carbon Monoxide levels and relatively small exposure may prove detrimental. Acute behavioral and physical symptoms include:

•Labored breathing
•Erratic movements

Pregnant animals, especially those in late gestation, may abort their babies pre term. Examination of your pet’s skin and mucous membranes such as nostrils, ears, genitals may show bright red coloration, though this symptom may not be apparent on most pets.

Consistant exposure to lower levels of carbon monoxide include flu like symptoms like nausea, vomiting, aches, weakness and loss of stamina. Blood acidosis is also a side effect.

Diagnosis and Treatment

Carbon monoxide detectorCarbon monoxide is life-threatening and treatment will require immediate veterinary attention. If you know or suspect that your pet is suffering from carbon monoxide toxicity, the first step is to move your pets away from the source of the carbon monoxide to a place where they can breathe fresh air. As soon as possible, transport them to the vet for oxygen therapy and fluids. The oxygen will remove the carbon monoxide from the blood, bringing your pet’s oxygen levels back to normal. Your vet will also collect blood samples for a complete blood count and biochemistry, as establishing the levels of carbon monoxide, carboxyhemoglobin and acids in the blood will dictate the initial treatment plan and continued treatment. Urinalysis and other applicable body fluid tests may also be performed. In some cases, your veterinarian may perform an electrocardiogram (ECG) to determine if your pet’s heart function has also been affected.

Your vet will instruct you on extended care. Generally, while your pet is recovering from the carbon monoxide poisoning, activity should be limited for several weeks following the exposure. Shorter walks, limited play and exercise, and a little extra TLC will be required until your pet is fully recovered. Observe your pet closely during recovery for residual signs of nervous system issues, and if you see any anomalies, contact your vet as soon as possible.


Obviously, the best course of action is to prevent your pets and the rest of your family from exposure of any detrimental levels of carbon monoxide. Carbon monoxide detectors are the first line of defense against this elusive killer, and should be installed in various areas of your home. Minimize or prevent exposure to carbon monoxide by ensuring that your heating system, water heater and any other gas, oil, or coal burning appliances are serviced annually by a qualified technician. Don’t use generators, charcoal grills or other gasoline or charcoal-burning devices inside your home, basement, or garage or near a window where gasses could accumulate in an enclosed area.
And don’t run a vehicle inside a garage attached, even if you leave the door open, and especially if the garage is attached to your house. Provide adequate ventilation for any fuel powered device and be sure to know what to do should an unfortunate exposure to carbon monoxide should occur.

Carbon Monoxide Poisoning can occur any time of year and is often due to human error. Protect you and your family, including four-footed members through prevention and close attention to potential sources.

White dog sleeping image referenced from wikipedia and originally posted by Eli Duke


  1. avatar

    My cocker spaniel passed away 2 weeks ago at only 9 1/2. Super healthy hunting dog that was still in tip top shape. Her diet consisted of small amounts of Beneful, and lots of venison, grouse, and other wild game her whole life. Her diagnosis was IMHA. An auto immune disease that causes your white blood cells to attck your red blood cells. She lost all the oxygen throughout the muscles and organs in her body. I understand that diseases can attack any dog whether they are fit, stong and healthy or none of the above but it still all so hard to process. My main concern now is my other dog, Andi. They were from the same litter and the yang to her yin. Not only is she hurting with a broken heart but I want to know if she is prone to the same disease. I know its not contagious but i am trying to figure out WHAT caused it. They are the same age, had the same diet, same genes, and same routine. One thing that comes to mind is the possibility of carbon monoxide poisoning. My husband and I got a new little 77 sqft trailer to travel and live out of during ski season. The temperatures we are living in are typically -10 to 10 degrees as a low. So we did our research and got the Mr. Heater Buddy because it was the safest heater on the market for indoor use. It has a low oxygen shut off feature and to be extra safe, we also have a carbon monoxide alarm (which has never gone off). We only turn it on to heat camper in the morning when we wake up, and the evening before we go to bed and NEVER while we sleep. We leave our overhead vent open for ventilation but it still seems stuffy at times. So now you have an understanding of the conditions we were in, here is the time line for when she got sick. The week before my precious pup passed away, we were up in the mountains camping in our trailer. We came home on a Friday and she started to look uncomfortable and lethargic by monday night/tuesday. On Wednesday she was panting, lethargic, dizzy and sleepy. Thursday morning her gums were white and we rushed her to the vet to figure out the devastating news and unfortunately had to put her down. Do you think that there is a correlation between the 2, or do you think it is something else? Has anyone had anything similar ever happen? Thanks in advance.

  2. avatar

    In my house cat and his 5 child died by generator fumes so plz keep awau ur family and ur pets by gen

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