Platygonus pearcei, as well as modern peccaries, are usually found in small herds. One particularly impressive find from Western Kentucky is of Platygonus compressus. This find included five individuals, all facing the same direction. Four of them appear to be adults, and a fifth is a juvenile. The position of the juvenile right next to another individual indicates that the animal was likely staying near its mother (Finch et al., 1972).
Platygonus pearcei has been found in smaller groups (usually two or three). It is thought that they likely exhibited the same behavior as the two species are very similar.
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