They need a way to cool down their bodies, and especially their brains, before they overheat.
But remember that dogs can overheat easily, so it's even more important to provide them with cooling retreats.
If it freezes then it could jam the cooling system causing the core to overheat.
In wearing winter clothing, exertion causes the body to overheat.
On a hot day, our bodies begin to overheat, and our skin brightens as blood flows up near the surface.
The particles can clog ventilation holes, causing the jet engines to overheat.
However, in some cases it can provide too much insulation and make the animal overheat.
Laptops equipped with lithium-ion batteries occasionally overheat and catch fire.
The high-velocity impact could have caused other lithium-ion batteries to overheat and catch fire.
The material also reflects less infrared light, which can overheat a solar panel and reduce its performance.