In animals there are numerous signals that signal aggression and submission.According to ethologists,these signals are:

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Ethologists believe that aggression and submission signals are largely programmed by genetic factors. These innate signals have been observed in a wide range of animal species and are thought to have evolved to facilitate social interactions and the establishment of dominance hierarchies. While some learning may occur, the primary drivers of these signals are believed to be genetic.

In Animals There Are Numerous Signals That Signal Aggression and Submission.According