AUSTRALIA Zoo is gearing up to celebrate Robert Irwin's 14th birthday, with free entry for kids, extra attractions and freebies on offer for one massive day.

This Friday, December 1, all kids under the age of 14 can enter the zoo for free with a paying adult as the zoo honours all Robert's greatest passions - dinosaurs, conservation and photography.

The day will kick off with a Jurassic obstacle course, dinosaur-themed games, science workshops, dinosaur mud clay workshops and photography sessions.

Robert and Terri Irwin will be on hand for the crocodile feeding, and a new life-sized dinosaur sculpture will be unveiled in the Wetlands area, created by the zoo's art and sculpture team.

Zoo-goers will be treated to a free bacon and egg sandwich breakfast, birthday cake and a t-rex puzzle gift while stocks last.