Share this postGreen HumourTool Use by OrangutansCopy linkFacebookEmailNotesMoreTool Use by OrangutansGreen HumourAug 19, 20249Share this postGreen HumourTool Use by OrangutansCopy linkFacebookEmailNotesMore1ShareTool use by orangutans. Happy World Orangutan Day!Green Humour is a reader-supported publication. To receive new posts and support my work, consider becoming a free or paid subscriber.Subscribe