The lion, Panthera leo, is a species of Felidae in Panthera. Its social associations, commonly organized as lion prides, make it useful for studying how a social group responds to other groups.[ref]
Living cat species by the IUCN SSC Cat Specialist Group. Panthera lineage: lion scientific name and placement
A 1994 field study tested group assessment with a playback experiment. Recordings of a single female roaring or three females roaring together simulated unfamiliar intruders in territories of 21 lion prides in Serengeti National Park. Defending females were less likely to approach the three-intruder playback, and approached more cautiously when they did. Their own group's size and composition also influenced the response.[ref]
Roaring and numerical assessment in contests between groups of female lions, Panthera leo by K. McComb and others. Abstract: playback manipulation,21prides and approach results
This experiment changed an acoustic cue while recording a behavioral response, without requiring researchers to introduce actual rival animals. Comparing one opponent with three while accounting for the defenders' social group size tests a more precise question than whether lions sometimes approach a roar.
The result supports sensitivity to information associated with relative group strength. It does not by itself establish human-like arithmetic, conscious calculation or an identical strategy in every social setting. The useful scientific point is the connection between a controlled signal and a context-dependent decision to engage.
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