being socially well-connected as a juvenile predicts adult fitness across diverse taxa
which is hypothesized to strengthen social bonds and develop social skills (8–10)
After decades of research on juvenile play, however, there is limited evidence supporting functions of play that have delayed adaptive benefits.
frequent play fighting predicts long-lasting copulations in farmed American mink (Neovison vison) (20).
At the second level, up to 14 males also work together (second-order alliances) to steal females from rival alliances or defend against such theft attempts (29, 30). Second-order alliances may endure for decades and are considered the core unit of male dolphin social organization (28, 34). Notably, first-order allies are chosen from within a male’s...
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