enclosure

The hamadryas baboons behave strangely at the Emmen Zoo in Emmen, inNetherlands, on July 31, 2013.  They don't eat and sit close together in a view trees and a small corner of their island. The cares can't explain their behaviour. A few years back the same group of baboons showed the similar behavior of mass apathy.

Vincence Jannink/AFP

Hamadryas baboons at the Emmen Zoo in Emmen, in the Netherlands, on Wednesday. The baboons have not eaten and sit close together in the trees and in a small corner of their island. A few years ago the same group of baboons showed a similar behaviour of mass apathy that could not be explained by their keepers.