Why dogs lick each other’s private parts

Why dogs lick each other’s private parts
Not only do dogs smell things out of curiosity, they taste and lick things to learn more about their surroundings.
When you see a dog licking another dog’s private parts, they are simply getting to know that other dog.
Dogs also lick each other’s private parts to practice good hygiene with their friend. Grooming is a sign of affection and it indicates the two dogs are getting along and like each other.