Pygmy hippo Petre celebrates 31st birthday with her calf Obi – video

Wild Sea keeper Claire Anderson talks about how Melbourne zoo celebrates the birthdays of its animals. Petre the pygmy hippo, who turned 31 on Tuesday, may now be considered a senior pygmy hippo but she didn't hold back in devouring a fruit and vegetable treat. Her calf, Obi, was the first of this endangered species born at the zoo since 1981