Orangutan at Germany's Allwetter Zoo cleans the windows

Mandi the orangutan is getting her spring cleaning on nice and early at Germany
Mandi the orangutan is getting her spring cleaning on nice and early at Germany's Allwetter Zoo. Adorable video shows the ape cleaning her glass enclosure like a pro.

Zoo and Aquarium Design: 2011

History Blackpool Zoo

Munster Zoo, Allwetterzoo Munster

Orientation toward humans predicts cognitive performance in orang-utans. - Abstract - Europe PMC

Columbus Zoo opens new indoor orangutan viewing habitat

Orangutan Gives Helping Hand Washing Windows

Aaron Gekoski - Award Winning Environmental Photojournalist

Baby orangutan a rising star at the Cleveland Metroparks Zoo (slideshow)

World Association of Zoos and Aquariums (WAZA) on LinkedIn: #extinction #conservation #conservationoptimism #zoos #aquariums

Sumatran Orangutan – Zoo Berlin

Zoo and Aquarium, PDF, Zoo

Zoo and Aquarium Design: 2011