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7 primates with expressive faces

orangutan with box on its head

Photo: ZUMA Press

7 of 8

So over his birthday

Rango the orangutan awaits his 34th birthday party at Tampa's Lowry Park Zoo with a less-than-thrilled expression on his face. The ape pulled a torn box onto his head as visitors sang "Happy Birthday" to him and gave him an edible birthday card covered in peanut butter and honey.