read the notes/credits.
here is the reason/proof she is a girl! Bluey is a girl, confirmed by the creators, despite the confusion caused by her blue coloring. The coloring of the characters in Bluey is based on Australian cattle dogs and not gender. The show's emphasis on positive messages for kids challenges outdated color and gender associations.Despite being named Bluey and having blue fur, Bluey is actually a girl. The creators of Bluey chose to break traditional gender norms. Blue, often associated with boys, is instead used for a playful and imaginative girl. Even though Bluey is blue, Bluey is a girl. That’s because Bluey and Bandit are Blue Heeler dogs, so she looks like her dad. Bingo and Chilli, meanwhile, are the Red Heeler breed, so their fur is cream, orange and reddish-brown.