A report has found that hyenas communicate using odours

Hyenas communicate using bacteria in their scent glands, according to a study in the current issue of Scientific Reports.

The study highlights a relationship between hyena clans and the microbes in their scent glands, which contain "odour-producing bacterial communities". Hyenas can distinguish these odours, which differ for each social group, using their noses.

This information was gathered from paste samples of a sour-smelling hyena secretion on the grassy Kenyan plains, as well as samples from hyenas' scent pouches. The samples revealed similarities between deposits left by members of the same clan.

Further studies will look deeper into the relationship between the bacteria and individual hyena clans, as well as finding out what information is being conveyed in this way.

"A critical component of every animal's behavioural repertoire is an effective communication system," said Michigan State University postdoctoral researcher and co-author of the study, Kevin Theis. "It is possible that without their bacteria, many animals couldn't 'say' much at all.

"The complex social lives of [hyenas] may ultimately be reliant upon their unheralded symbiotic microbial communities," added Theis.