Listening is not a nice human property, but it can be useful. It can be observed in the animal world as well.
But the animals communicate not only with sounds, but also with smells and visual signals. The signals can give you information about your emotional state and draw attention to predators in particular. Individual signals are species-specific, meaning that only one species is observed for a signal, but several animals can respond to an alert, as this helps their survival.
Experiments on how individuals of different animal species respond to threatening signals from other species have been studied. Animals, even if belonging to other species, react uniformly to the emergency if the predator is a threat to them. In most cases, even the alarm is quite similar, so their reaction is.
(Source: homeowner.com): flickr.com (Images are illustrations)