They most often form groups of up to 30 individuals. They tend to increase the size of groups during periods of deteriorating climatic conditions, i.e. during the dry season, when access to water and food is difficult, and capybaras become extremely easy targets for predators.
These animals have developed a system of communication, used, among other things, to warn of danger. The arsenal of noises they make includes grunts, squeaks, and whistles.
They mark territory thanks to scent glands, and they are the only rodents that also have sweat glands that perform a temperature-regulating function and can aid communication with the help of scent secretions.
