Group-living animals sleep together, yet most research treats sleep as an individual process.
Here, we argue that social interactions during the sleep period contribute in important, but …

Simple Summary Horses are highly social animals that preferably live in stable social
groups and form long-term affiliative bonds. However, although their need for social …

Studying animal societies needs detailed observation of many individuals, but technological
advances offer new opportunities in this field. Here, we present a state-of-the-art drone …

Simple Summary Multilevel societies are the most complex social structures in animals.
They are social structures with nested levels of social organization, where stable “core units” …

Similarity or homophily in personality drives preferential strong social bonds or friendships in
humans and some non-human primate species. However, little is known about the general …

Feral horses form relatively stable harems over time that are characterized by long-lasting
bonds among their members, a characteristic that makes them an exceptional case of a …

Growing evidence shows a variety of sensorial and motor asymmetries in social and non-
social interactions in various species, indicating a lateralized processing of information by …

The benefits of sociality are not equitably shared among members of a social group. The
position individuals occupy in social networks is key to maximizing their fitness and …

What makes animal gaits so audibly rhythmic? To answer this question, we recorded the
footfall sound of 19 horses and quantified the rhythmic differences in the temporal structure …

In feral horse (Equus caballus) populations, females can associate in year-round social
groups with one male (single-stallion (SS) groups) or multiple males (multi-stallion (MS) …