1 Almond, Kyle. "These Great Apes are Close to Extinction." CNN. Accessed: January 3, 2023.
2 "Apes." IFAW. Accessed: November 26, 2024.
3 "April is Ape Awareness Month." Fort Wayne Children's Zoo. April 10, 2023. Accessed: November 26, 2024.
4 Edridge, Alison. "What's the Difference between Apes and Monkeys." Britannica. Accessed: December 31, 2022.
5 Groves, Colin Peter. "Ape." Britannica. Accessed: June 24, 2024.
6 Marples, Megan. "The Laughing Patterns of Human Infants Match Those of Another Species, A New Study Finds." CNN: Space + Science, August 31, 2021. Accessed: January 3, 2023.
7 Messenger, Stephen. "A 'Shrewdness' of Apes and Other Odd Group Names." Treehugger. June 26, 2019. Accessed: January 3, 2023.
8 "Primates: Monkey & Apes." Skeletons: Museum of Osteology. Accessed: November 26, 2024.
9 "Siamang Songs & Gibbon Duets." Point Defiance Zoo & Aquarium. February 5, 2021. Accessed: November 26, 2024.
10 Thompson, Shawn. The Intimate Ape. New York: Kensington Publishing Corp., 2010.