Why was bimbo so protective of tito from birth?

Bimbo may have been protective of Tito from birth due to a variety of factors, such as their familial bond, instinctual behaviors in dogs to protect their offspring or younger pack members, or past experiences that have shaped Bimbo's protective instincts. Additionally, Bimbo's personality, breed characteristics, and socialization could also play a role in his protective behavior towards Tito. Understanding the specific dynamics of their relationship and Bimbo's individual traits would provide a more accurate explanation for his protective nature towards Tito.