# What do you hear, what do you say? Ultrasonic calls as signals during play fighting in rats

> Research article (International Journal of Play, 2020) · cited 23× · AI/ML

**Wikidata**: [openalex:W3006556226](https://www.wikidata.org/wiki/openalex:W3006556226)  
**Source**: https://4ort.xyz/entity/what-do-you-hear-what-do-you-say-ultrasonic-calls-as-signals-during-play-fighting-in-rats