Dogs mostly rely on their excellent sense of smell to feel the deliciousness of food. If it smells delicious, the dog will have a great appetite; if it smells not interesting, the dog will not be very interested. Dogs' tongues are insensitive to taste and have about one-sixth the number of taste buds as humans. Although dogs have fewer taste buds than humans, they can still taste a variety of flavors.

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The dog’s tongue is also an important heat dissipation organ, especially in the summer. If you look at the dog drooling and gasping with its tongue out, this is a sign of External heat dissipation. In addition, when they drink water, they need to lick their tongues to get the water into their mouths. On average, dogs need to lick their tongues more than 100 times for every glass of water they drink.