If your dog is panting while resting, there is nothing wrong if they’ve just finished some physical activity. However, if your dog is panting despite having been resting for some time, this is a sign of trouble.
Panting while resting can be caused by problems like heatstroke, respiratory illnesses, anemia, and poisoning.
When it’s hot, humans regulate their body temperature through sweating. However, dogs don’t have sweat glands. Instead, they use panting as a thermoregulation mechanism.
Panting allows moisture to evaporate from the dog’s tongue and upper respiratory tract, thus cooling their body temperature. Normally, this happens when your dog is active.
If your dog is panting excessively even when they are resting, this could be a sign that their body temperature has become excessively high, putting your dear fido at risk of a heatstroke.
Other symptoms of heatstroke in dogs include drooling and reddened gums. In extreme cases, your dog will start vomiting, lose coordination, become mentally dull, and eventually, they will collapse. If no action is taken, heatstroke can lead to death.
Panting even when your dog is resting can also be a sign that your dog is experiencing some respiratory problems that are making it hard for them to breathe.
Some respiratory problems that could lead to panting include lung tumors, pneumonia, lungworm, tracheal collapse, bronchitis, laryngeal paralysis, and accumulation of fluid in the lungs.
This is a condition that is caused by excessive loss of blood, insufficient production of red blood cells, or when your pooch’s immune system sees the red blood cells as a threat and destroys them.
Low levels of red blood cells interfere with your dog’s ability to absorb oxygen, so your dog will start panting in a bid to get more oxygen into their blood. Other symptoms of anemia in dogs include lethargy and fatigue, weakness, pale gums and jaundice.
If your dog has consumed something that is toxic to them, this can lead to panting, especially if the toxin has affected your dog’s ability to absorb oxygen. Common toxins that can cause this reaction include onions and garlic.
Dogs that have ingested something toxic will also exhibit other symptoms like diarrhea, vomiting, and excessive drooling.