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Baby gorilla exploring San Diego zoo

4 July 2014 Last updated at 08:56 BST

A baby gorilla that had a tough birth has been exploring its surroundings at San Diego Zoo in the USA.

Three-month-old Joanne has learned to ride on her mother's back, and has even been crawling on her own.

She's also grown about six teeth and started to get to know her two older brothers.