The zoo shared the video of the occasion on Monday, 28 September.
In the footage, the bear can be seen enjoying treats prepared for her special day.
Using their incredible sense of smell, Bulan and her sister Pagi explored special enrichment and found all the tasty surprises.
Born in 2006, Bulan came to Oakland Zoo in 2008, just a couple months before her younger sister Pagi was born.
Sun bears have been attracting global attention for their human-like’ features.
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