# Not all yawns tell the same story: The case of Tonkean macaques

> Research article (American Journal of Primatology, 2021) · cited 13× · AI/ML

**Wikidata**: [openalex:W3157629564](https://www.wikidata.org/wiki/openalex:W3157629564)  
**Source**: https://4ort.xyz/entity/not-all-yawns-tell-the-same-story-the-case-of-tonkean-macaques