It’s hard to give a clear cut answer to that question.
Your dog is probably panting and breathing pretty heavily. That would be a sign.
If you are walking your dog and your dog lies down in the middle of the walk, that would also show that your dog is overheating.
A client of mine recently passed away. He was wheelchair bound and had a service dog, who was pretty well conditioned. My client kept going in his motorized wheelchair with the dog behind him and the dog had a heat stroke and did not survive. That was very sad and broke my heart.
Especially in the hot summer months, it is important not to over exert your dog. We had a video published this week, that talked about the five second rule. If you can’t put your hand on the pavement for five seconds, you should not be walking your dog. Keep in mind that the temperature can change quickly. I had that happen to me last week within a matter of ten minutes. The dog suddenly pulled over to the grass and laid down and we ended up carrying the dog home.
It’s best to walk early in the day or later in the evening. Check the concrete. Be sure your dog gets plenty of water and watch for heavy panting. Watch your dog’s body language. These are ways to prevent heat exhaustion or heat stroke.
Longoriahaus Dog Training i a dog training service in the Kingwood, Humble and Houston, Texas area. Longoriahaus Dog Training can help you raise a happy and reliable dog.