Build me a heat tolerant dog

I've got buddies that run fox hounds on yotes and fox. They run now just like they would in the winter. However, they run all night long several times during the week, every week. Those dogs know how to pace themselves for a lot of action.

As for me, man, I'm not going to lie. Walking in the woods during daylight hours this time of year around here, will get you hot and sweaty real quick. The air is so muggy, that it feels like you've got a cinderblock tied around your legs. If you stop to take a breather, the skeeters are on you like bees on honey. It's not fun to hunt during the day around here right now. Generally, once our bow season gets started in September, that is when I really start hitting the woods hard. Come November, the dogs seem to have their wind. Of course, I don't hunt but 2-3 times a week on a good week. To many chores for the wife. You guys that are hunting hard right now, and covering that kind of ground, show dedication to say the least. More power to you. It is very possible that the drive of the dog handler is more likely what is in question in my case. LOL!!!!!!!!