File picture: ZSL London, August 21st 2014. Kumbuka the silverbacked gorilla ponders the height scale in his enclosure as ZSL London holds its annual animal weigh and measure day to update their databases. The gorilla escaped from its enclosure on the evening of October 13th 2016, prompting an armed police response before ZSL staff managed to tranquilise him and return him to his enclosure. Credit: Paul Davey/Alamy Live News

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Photo credit: © Paul Davey / Alamy / Afripics
License: Licensed
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Keywords: animal, animals, biology, breeding, captive, gorilla, kumbuka, london, measure, measuring, nature, rare, silverback, silverbacked, society, species, weigh-, weighing, zoo, zoo-keeper, zookeeper, zoological, zoologist, zoology, zsl