The symptoms of a canine heat stroke include:

• Panting – It is entirely normal for dogs to pant in hot weather because panting is how they maintain their body temperature in general. Nevertheless, if you think your dog is panting excessively or too quickly, it could be worth recording it so you can show a vet or someone else who has more experience.
• Dry nose – While a wet nose often indicates that a dog is healthy, a dry nose may be the first sign that anything is wrong.
• Drooling – A dog may drool in some circumstances, but if there doesn’t appear to be a clear-cut trigger that you can identify, you should look into it further. Another effect of the environment’s extreme heat on dogs is that some dogs drool when they are sick, and sickness is frequently accompanied by dizziness.
• Lethargy – Although the summer months make dogs drowsy, if it appears severe, for a normally active dog to move about less, or even seem dizzy or goofy when walking, then it is worth taking note of.
• Elevated pulse –If you feel comfortable touching or handling the dog, you can feel their pulse either on the chest behind the left front leg, or the inside of a hind leg (if the dog lets you). You can look this up to understand where to place your hand better if you’re feeling unsure. But keep in mind that dogs that are smaller in size have a faster heart rate than bigger ones, so try to take that into account when determining if there is a cause of concern.
• Increased pulse – If you feel comfortable handling or stroking the dog, you can feel their pulse on the inside of a hind leg or on the chest behind the left front leg (if the dog lets you). If you’re uncertain where to put your hand, you can look this up to get a better understanding. However, bear in mind that smaller dogs have a quicker heart rate than larger dogs, so try to consider that when assessing whether there is a reason for concern.