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This is Scientific Americans' 60-second science. I'm Jason Goldman. Got a minute?

Rhinos have notoriously poor eyesight, so they mostly rely on their noses to understand the world around them.

But there is one interaction in which sound plays a key role.

Southern white rhino males can either be dominant or subordinate,

and only the dominant males hold and defend territories. New research finds that they eavesdrop

on the cause of other males to know who is who. We found that contact calls carry information

about the dominant status of the

male. That means that only by listening to the quorum, you can say the male is very plural or

something else. Ivana Sinkova, a zoologist at the University of KwaZulu Natal in South Africa.

She and her team spent almost two years in South Africa's Shishluwi-Umfilosi Park,

recording the social contact and courtship calls of male rhinos.

Then they played those calls back to the dominant territorial males and watch the responses.

The researchers asked that the rhino calls not be included in this podcast due to the

concern that poachers could use the calls to lure rhinos closer.

Back to the reactions of the rhinos.

They started to search for the intruder, developed quickly, and spent the longest time

searching around for the intruder after the playback office for the next goal,

...