Female gorilla at Melbourne Zoo killed by male in show of 'unexpected aggression'

A female gorilla at Melbourne Zoo has died of complications from injuries inflicted by a young male gorilla. Melbourne Zoo staff said Otana, the silverback - as adult males are called - had been displaying an "unexpected level of aggression" towards the female gorilla, named Julia. "Silverbacks assert their dominance as a normal part of their behaviour," Zoos Victoria said.
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