A Javan lutung escaped from the Apenheul in Apeldoorn on Wednesday.
The orange ape is suspected to be wandering through the Apeldoorn woods, the park organisation said on Thursday.
The lutungs in Apenheul live on an island and are separated from the public by water barriers. The ape that escaped is thought to have done so by using the rocks in the new Barbary apes’ area that opened last week.
Apenheul is asking people who see the ape to report the sighting. The park said the lutung is not dangerous. Lutungs live on leaves.
This ape is related to the one that escaped from the animal park Diergaarde Blijdorp last June. That one, a pregnant female, returned a few days later of her own volition.
The puma which has been at large in the Veluwe for the past several weeks was also sighted at the end of June near Apeldoorn.