More 'Bluey' is on the way — and the kids' show is now a $2 billion juggernaut

• "Bluey" fans are worried the series could end with its third-season finale on Sunday.
• The "Bluey" brand is worth an estimated $2 billion but faces some challenges going forward.
• The kids TV show ranked among the most-watched streaming series in America last year.

Fans of the children's TV sensation "Bluey" feared the season three finale in April would mark the end of their favorite show.

Those fears proved unfounded, but the show does face some challenges down the line.

"Bluey" is an Australian preschool show that features a family of Australian Cattle Dogs or "Blue Heelers": Bluey, her younger sister Bingo, and their parents, Bandit and Chilli.