The reason why cats don’t stick out their tongues is that cats’ heat dissipation function mainly relies on the butchers on their feet, so cats generally don’t stick out their tongues. The sweat glands on cats are not well developed, but there are a large number of sweat glands on the soles of cats’ feet. Cats usually sweat through their flesh pads. Just because a cat sticks out its tongue doesn't mean it's hot. When a cat sticks out its tongue, there's usually another reason.

When dogs are hot, they will dissipate heat through their tongues to maintain a balanced body function. The reason why cats don’t stick out their tongues is that cats’ heat dissipation function mainly relies on the fleshy pads on their feet, so cats generally don’t stick out their tongues. When cats stick out their tongues, there are usually other reasons.

In the summer, cats usually lie down and sleep. There are sweat glands growing in the cat's skin, but they are not developed, so the cat will not sweat profusely. There are a large number of sweat glands growing on the fleshy pads on the soles of cats' feet. While regulating their body temperature through breathing, cats dissipate heat by sweating a lot through the fleshy pads on their soles.

The cat sticks out its tongue not because it feels hot. Cats may stick out their tongue when they feel very comfortable, or as a habitual gesture, or if there is something uncomfortable on their tongue.