What is the relationship between the density of a dog's coat and body temperature?

While wandering through several dog forums, I noticed a common misunderstanding: many people believe that although some dogs have thick coats, the fur acts as "insulation" in hot weather, so it should not be clipped.

1. Although a dog's body has no sweat glands, it is still constantly releasing heat to the outside; the lower the outside temperature is compared with body temperature, the easier it is for heat to be released. A dog's body temperature is higher than room temperature in most cases, and summer temperatures are already high to begin with, so if a dog's coat is too thick, it is definitely not good for the body's heat dissipation.

More than one forum member has compared a dog's coat to the cotton quilt wrapped around a popsicle, and that is wrong. That is because the popsicle itself is much colder than the outside temperature and does not release heat, so the cotton quilt can play an insulating role. A dog's body is exactly the opposite.

But many dogs' coats cannot be clipped, such as a Siberian Husky's. Still, whether the fur on a dog's belly can be appropriately trimmed shorter is something everyone can discuss.

2. Short-muzzled dogs feel hotter in summer, which should be because their most powerful heat-dissipating weapon, the tongue, is really a bit short, so dogs like Pugs always stick out a little tongue in summer.

3. For both dogs and people, the more they eat, the more heat they produce. Therefore, in summer, people feel they have no appetite. But a greedy dog like my Doudou always eats whatever is given and however much is given. So in summer, its diet really needs to be controlled.