Knowledge Tree
chimpanzee
Also known as: chimpanzee, chimpanzees
Facts (21)
Sources
The Mechanisms of Psychedelic Visionary Experiences - Frontiers frontiersin.org Sep 27, 2017 4 facts
claimThere was a positive selection for pituitary cyclase-activating polypeptide precursor (PACAP), a uniquely human feature that emerged after the separation from the common ancestor with chimpanzees.
claimHuman serotonergic systems have a significantly greater binding affinity with LSD, metergoline, and dihydroergotamine compared to chimpanzee serotonergic systems.
referencePregenzer, Alberts, and Bock (1997) characterized the ligand binding properties of 5-HT1D receptors cloned from chimpanzees, gorillas, and rhesus monkeys, comparing them to human and guinea pig receptors.
claimHuman and chimpanzee 5-HT1D receptor amino acid sequences differ in ways that indicate molecular divergences in human evolution.
Self-Consciousness - Open Encyclopedia of Cognitive Science oecs.mit.edu Jul 24, 2024 3 facts
claimThe mirror self-recognition test is a tool for studying self-awareness that was initially prompted by observing how chimpanzees responded to their images in mirrors.
procedureThe mirror self-recognition test procedure, as defined by Gallup (1970), involves placing a red mark on a chimpanzee's face while they are under anesthetic, in a location they cannot see without a mirror and cannot detect through other modalities, then observing their behavior when they see themselves in the mirror.
claimChimpanzees demonstrate self-recognition by touching and rubbing a red mark placed on their face only when they are in front of a mirror, suggesting they share with humans the capacity for self-recognition.
Evidence for Meat-Eating by Early Humans | Learn Science at Scitable nature.com 3 facts
referenceMitani and Watts (2001) investigated the reasons behind hunting and meat-sharing behaviors in chimpanzees.
referenceRagir et al. investigated gut morphology and the avoidance of carrion among chimpanzees, baboons, and early hominids in a 2000 study published in the Journal of Anthropological Research.
referenceDavid P. Watts studied scavenging by chimpanzees at Ngogo and discussed the relevance of this behavior to early hominin behavioral ecology in a 2008 article in the Journal of Human Evolution.
Evolutionary psychology - Wikipedia en.wikipedia.org 3 facts
claimHumans, similar to chimpanzees and bonobos, possess flexible social instincts that enable the formation of extended families, lifelong friendships, and political alliances.
claimEvolutionary psychologists study chimpanzees, bonobos, and other great apes to gain insights into human ancestral behavior.
claimGordon Gallup found that chimpanzees and orangutans demonstrate self-awareness in mirror tests, whereas little monkeys and terrestrial gorillas do not.
The role of Plant Foods in the evolution and Dispersal of early Humans kernsverlag.com Jul 30, 2022 3 facts
referenceD. P. Watts et al. analyzed the diet composition and diversity of chimpanzees (Pan troglodytes schweinfurthii) at Ngogo, Kibale National Park, Uganda.
measurementChimpanzees, bonobos, and early hominins derive approximately 60-70% of their calories from fruit and 20% from leaves, according to Pontzer and Wood (2021).
measurementChimpanzees and bonobos, particularly dominant males, hunt and kill small vertebrates and monkeys, which can constitute 10-20% of their diet.
To Follow the Real Early Human Diet, Eat Everything scientificamerican.com Jun 25, 2024 2 facts
claimThe earliest known hominins likely subsisted on a diet similar to that of modern chimpanzees and bonobos, consisting primarily of fruits, nuts, seeds, roots, flowers, leaves, insects, and occasional small mammals.
claimJames Fellows Yates and colleagues at the Max Planck Institute for Evolutionary Anthropology analyzed bacterial DNA preserved in Neandertal tartar and compared it with bacterial DNA from the teeth of modern chimpanzees, gorillas, howler monkeys, and modern humans.
(PDF) Human Evolution - ResearchGate researchgate.net Sep 26, 2025 1 fact
claimThe human diet has undergone significant alterations since the divergence of the human and chimpanzee/bonobo lineages.
Scientists Identify the Evolutionary “Purpose” of Consciousness scitechdaily.com Nov 27, 2025 1 fact
claimChimpanzees, dolphins, and magpies have been shown to possess the ability to recognize themselves in a mirror.
Self-Consciousness - Stanford Encyclopedia of Philosophy plato.stanford.edu Jul 13, 2017 1 fact
claimChimpanzees pass the mirror self-recognition test, while other primate species fail, according to Anderson & Gallup (2011).