My Dog , a lab 4y/o , is sleeping and a bit lethargic , but otherwise seems normal and has lost his energy. what to do?

My dog was trying to mate but he got aggressive at ***** and could not do, when we brought him back, hes atrted panting heavily with red eyes and very red gums , he started drinking water much and we cooled him down with spraying water and putting him under air condition , he is normally eating , but 1 day has passed and he is lethargic And seems sad please help.

My dog ussually barks at other dogs, and in his first response he barked at the female counterpart , so he got exhausted, so we stopped the process


Otherwise , ussualy he does dry humping (masturbation) with his blanket, and otherwise he is very active and a lovely dog, so should we try again?


Also, igot recommended that one should get his pet mated for the pet's betterment