In the book outsiders Why does Ponyboy refer to Johnny Cade as the gangs pet and everyones kid brother?

Ponyboy refers to Johnny Cade as the gang's pet and everyone's kid brother because of Johnny's vulnerable and innocent nature. He is smaller and more sensitive than the other members of the gang, which makes them feel protective of him. Johnny's traumatic experiences and difficult home life further contribute to this perception, as the gang often rallies around him, treating him with care and affection. This dynamic highlights the themes of loyalty and brotherhood among the group.