Girls divide boys into four types according to their age and characteristics:
German shepherd: young and aggressive. Little milk dog: young and simple.
Old dog: Old age is not simple and stubborn.
Old bald donkey: Old people are not only stubborn but also bald.
From the main types, the common characteristics of little suckling dog boyfriends are clingy, girlfriend-centered, simple and jealous (jealous and cute).
"Little Wolf Dog" is actually an evolutionary version of "Little Milk Dog". While maintaining the clingy characteristics of "little suckling dog", it also increases some domineering, possessive, responsible and responsible.