PITTSBURGH (KDKA) – You’re invited to a birthday celebration.

The baby gorilla at the Pittsburgh Zoo & PPG Aquarium turns 1-year-old.

Baby Ivan will celebrate with a special birthday cake and presents.

When he was first born, his mother was unable to nurse.

Staffers and volunteers worked around the clock, caring for him like a mom gorilla, grooming him and even communicated using gorilla sounds.

And you can take part in his birthday celebration. It’ll take place Sunday at 1 p.m. at the Gorilla Yard, when he receives his special treat.

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