The Bernie Mac Show (2001)

Season 3: Episode 20

Bernie and Wanda struggle with how to discipline Bryana when she begins to change from their adorable baby girl into a bratty little bully. They consult a child therapist to determine what is making her suddenly throw tantrums, become a bully at school and fight with her siblings at home. Meanwhile, Bernie buys Bryana a guinea pig but it's Wanda who ends up taking care of the pet and eventually bonding with it