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#animalbehavior

3 Beiträge3 Beteiligte0 Beiträge heute
Hacker News

Chimpanzees yawn when observing an Android yawn

nature.com/articles/s41598-025

NatureChimpanzees yawn when observing an android yawn - Scientific ReportsThis study explores contagious yawning in adult chimpanzees (Pan troglodytes) in the presence of a non-biological humanoid agent, an android. Chimpanzees observed an android portraying specific facial expressions, including yawns and gapes. The results showed that adult chimpanzees exhibited across-agent yawn contagion, with a graded response: the highest contagion occurred when the android displayed a fully wide-open mouth (Yawn condition), a reduced response when the mouth was partially opened (Gape condition), and no contagion when the android’s mouth was closed (Close condition). Additionally, chimpanzees engaged in behaviours associated with drowsiness, such as gathering bedding materials, constructing nests, and lying down, while observing the android yawning. This suggests that yawning by an unfamiliar model may act as a contextual cue for rest, rather than merely triggering a motor resonance response. These findings contribute to the understanding of non-human primates’ susceptibility to contagiously induced behaviours, specifically yawns, even when triggered by an artificial agent. This study highlights the role of social factors in shaping yawn contagion and calls for further research on cross-species and cross-agent interactions.
#HackerNews#Chimpanzees#Android
RDN

Meerkats, coatis, and hyenas all show similar (heavy-tailed) distributions of behaviors. The longer they are engaged in a behavior, the less likely they are to switch to a different behavior in the next instant. This may result from positive feedback or environmental/physiological conditions that affect behavioral processes operating at different timescales.

Summary: ab.mpg.de/679000/news_publicat

Original paper: pnas.org/doi/epub/10.1073/pnas

www.ab.mpg.deVery different mammals follow the same rules of behaviorResearch hints at an underlying architecture that orders the movements of animals
#Science#Behavior#AnimalBehavior
Headlines Africa

Africa: Nature's Sister Act Sees Female Bonobos Outranking Stronger Males: [RFI] Female bonobos, one of the closest living relatives to humans, have a rare kind of power - they dominate males, even though they are smaller and physically weaker. Scientists say this is because they form alliances, helping them win most fights against their male counterparts. newsfeed.facilit8.network/TKYg #Bonobos #WildlifeConservation #FemaleEmpowerment #AnimalBehavior #NatureLovers

Headlines Africa

Africa: African Wild Dogs - DNA Tests of Their Faeces Reveal Surprises About What They Eat: [The Conversation Africa] The African wild dog is one of Africa's most endangered predators. African wild dogs are highly elusive, avoiding human contact and utilising vast, remote territories to remain out of sight. Current estimates suggest that only about 6,600 individuals remain, in… newsfeed.facilit8.network/TKYf #WildlifeConservation #AfricanWildDogs #EndangeredSpecies #DNAResearch #AnimalBehavior

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