“Top 10 facts about orangutans | WWF.” WWF-UK, 21 August 2023, https://www.wwf.org.uk/learn/fascinating-facts/orangutans. Accessed 16 April 2024.
“Orangutan Behavior – Orangutan Foundation International.” Orangutan Foundation International, https://orangutan.org/orangutan-facts/orangutan-behavior/. Accessed 16 April 2024.
“Orangutan Facts.” The Orangutan Project, https://www.theorangutanproject.eu/about-orangutans/orangutan-facts/. Accessed 16 April 2024.
“All About Orangutans - Adaptations | SeaWorld Parks & Entertainment.” at SeaWorld.org, https://seaworld.org/animals/all-about/orangutans/adaptations/. Accessed 16 April 2024.
“Orangutan.” San Diego Zoo Animals & Plants, https://animals.sandiegozoo.org/animals/orangutan. Accessed 16 April 2024.