She is a brown dog with short brown hair and black pupils who works at the zoo as a feeder and cleaner. Terrible accidents happen there every day, such as people falling in the animals cages and gets eaten by the animals, or fights, or one of the animals escapes their cage and commit a massacre, ect. Yet Rookie's so chill when such things happen, to the point of eating a popcorn while watching a lion eating one of the costumers (she have nothing to do with the accidents). She is silly and chill.