April 11, 2014 6:05 PM

Animal escapes rarely happen, but they can give zoos some wild rides

When animal escapes happen — and they do — zookeepers know the reasons, which can be human error or the more naturalistic designs of modern zoos. In the escape of seven chimps, Kansas City Zoo director Randy Wisthoff and other experts acknowledged that the peripatetic primates certainly had the tools they needed: big brains and a scalable tree branch.

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