Tomorrow, Sibu the Orangutan celebrates his birthday and to celebrate Dublin Zoo are giving free entry to anyone of the same age.
Sibu turns 40 and anyone who was born in 1978 is welcome to free entry at the zoo.
Kids will also be able to visit for half price.
The day will be celebrated with themed arts and crafts, a special keeper talk, orangutan games and a fundraiser for the Orangutan Foundation.
If you share a birthday year with Sibu all you have to do is bring along some ID, kids tickets can also be bought at the gate.
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