The most direct way to express a dog's emotions is to bark. It is said that wild dogs can't bark, and domestic dogs can bark. Therefore, if you carefully observe the dog's expressions and movements, and pay attention to the sounds made by the dog, you must be able to guess the dog's will and psychology.

When strangers enter the door, or approach the kennel, the dog will bark vigorously. When two dogs meet on the road, they generally don't bark very often. As you can see, dogs usually bark only within their sphere of influence.

General small dogs have a high and sharp bark, and like to bark; large dogs have a thicker and lower voice, and have a calmer temperament, usually not barking.

The barking and vigilance of a dog is a must for a watchdog. The dog is a housekeeper, and when it sees a stranger, it barks immediately. This is the language of dogs, and barking is a warning. Arouse the attention of companions, and at the same time tell the owner to be more vigilant. The cry is also a demonstration, with the effect of cheering and intimidating. When the same species are far apart, they also use their calls to exchange information.

The dog also has an authoritative growl for the weak, and is most likely to make this sound, authoritative and intimidating, when the hound is chasing things. Dogs make an oooooooooooo whine when they are bullied. Puppies leave the mother dog, or feel cold, or have abdominal pain from parasitic roundworms, and they will make a high-pitched humming sound. Dogs also groan when they fight or express anger, which is a sound of disgust or anger. In addition, when the dog is sad, it will make a nasal sound, which means sad and no way.

In addition, dogs make different sounds when they are happy and rub their cheeks from time to time.