Showing mobile phone videos to gorillas can cause them to fight and bully each other, according to a primate expert.The intelligent creatures could start to compete with each other for spots to watch videos being shown to them by humans through glass enclosures, the conservationist told MailOnline.It comes after a zoo in Toronto begged visitors to stop showing gorillas their phones as it's 'upsetting' them and 'affecting their relationships'.
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