Recognising the signs of overheating in your dog is crucial for their health. As temperatures rise, it becomes increasingly important to be vigilant and observant of your four-legged friend's behaviour and physical condition. Knowing the early warning
signs of overheating can help you take prompt action to prevent serious complications or even death.Â
Excessive panting and droolingÂ
Panting and drooling are the primary ways your furry friend regulates their body temperature when it becomes too hot. Panting allows dogs to evaporate moisture from their tongues, nasal passages, and the lining of their lungs, which helps dissipate heat. In hot weather, you might observe this more frequently because dogs don't sweat through their skin like humans. Instead, they rely heavily on panting to cool down. Excessive drooling often accompanies panting, as the increased salivation is another way the body attempts to cool itself.Â
It's crucial to differentiate between normal panting due to physical activity and signs of overheating. If your dog has been running or playing and then pants but quickly recovers, this is usually normal. However, if your pooch is panting excessively even when at rest, especially in a warm environment, this can be a red flag. If the panting is coupled with thick drool or a foamy substance, it could indicate that your dog's cooling mechanisms are overwhelmed and that they are struggling to reduce their body temperature. The thicker the drool, the more dehydrated they are. Â
Increased heart rateÂ
When a dog becomes too hot, their heart rate increases as part of the body's effort to regulate temperature. A higher heart rate helps to circulate blood more rapidly, which in turn aids in releasing heat through the skin and respiratory system. To determine if your pup’s heart rate is too high, you can manually check the pulse by placing your fingers on the inside of the thigh, where the femoral artery is located.Â
You should always use your fingers and not your thumb to detect their pulse. A normal heart rate for a resting dog typically ranges from 60 to 140 beats per minute, depending on its size and breed. If you notice a significantly higher rate, it could be a sign of overheating, necessitating immediate cooling measures. Getting to know your pup’s normal resting heart rate can be a helpful tool to help them in the long run. Â
Lethargy and weaknessÂ
When your pooch overheats, their body will struggle to maintain normal functions, resulting in lethargy and weakness. Overheating impairs cellular and organ function due to decreased blood flow and oxygen delivery which is why you see a diminished energy level. As heat stress progresses, they may exhibit signs such as sluggish movement, reluctance to play or exercise, and an unsteady gait. Lethargy becomes apparent as the dog's body prioritises cooling over activity, conserving energy to maintain essential functions. Â
Dark or red gumsÂ
Gum colour is a really helpful indicator of a dog's health, particularly when it comes to overheating. Dark or red gums suggest that the body is under significant stress due to elevated temperatures. Â
As the body temperature rises, blood vessels expand to increase blood flow in an effort to dissipate heat, leading to darker or reddish gums. Pale gums are often associated with illness but this will usually indicate poor circulation which can come after they grow dark first. This pallor can suggest that your pup is not getting adequate oxygen, a potentially dangerous situation that necessitates immediate veterinary attention. If you can notice the moment their gums grow dark and intervene before gums grow pale then you are likely to avoid any serious illness. Â
Vomiting or diarrhoeaÂ
Overheating can severely impact your canine companion’s gastrointestinal system, leading to vomiting or diarrhoea. Elevated body temperatures strain internal organs, including the digestive tract. Heat stress causes inflammation in the intestines and stomach, impairing their ability to properly process food and absorb nutrients so they tend to come back up or remain undigested. Â
Overheating can also lead to dehydration, which exacerbates stomach upset and disrupts electrolyte balance. This combination of factors creates a hostile environment in the digestive system that’s often a good indicator of something being amiss. Â
Collapsing and seizuresÂ
Severe overheating can lead to your beloved pet collapsing or experiencing seizures, both of which are serious medical emergencies. When a dog collapses due to heat stress, they may appear weak, unresponsive and unable to stand. This collapse is often a result of the extreme strain placed on their cardiovascular and respiratory systems as they struggle to cope with elevated body temperatures. Seizures, on the other hand, involve involuntary muscle contractions and can be a sign of overheating affecting their neurological functions.Â
Seizures will usually follow other overheating symptoms and are an escalation so if you catch it quickly you can avoid it going that far. During a seizure, your poorly pooch may lose consciousness, fall over and exhibit uncontrolled shaking or jerking movements. Prompt cooling measures and veterinary care are essential if your pup suffers a seizure from getting too hot. Â