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Human language is productive, right? So we can combine known sounds to create words for entirely new things. So prairie dogs, they'd actually do this exact same thing. So what researchers did is they introduced what they called novel objects into the colony. So some of these objects were black oval board or cutouts of completely unfamiliar animals, elephants, things that the prairie dogs would never see in their life. And the prairie dogs, they instantly coined new uniform calls to describe them. And you could repeat the experiment over and over and they would find the same fanatic or the chirp or the information the burst was the same when they were chirping, yipping, chirping, that sort of stuff. And the way they did this is they would take parts of the chirp and modify it ever so slightly or change the placement within it. And again, we're talking about something that's occurring over there.