Most of the communication between dogs comes through the sense of smell. When they meet, they will smell each other's butts to learn each other's information. This is also the reason why dogs like to smell people's butts. This is how they communicate through smell. To get your information, in addition to smell, dogs also communicate through voice and body language.

Tip:

When a dog completely trusts you, they will show their most vulnerable belly in front of you and let you stroke it. Parents can use this to Determine whether your dog completely trusts you.