Journal
ISCIENCE
Volume 26, Issue 2, Pages -Publisher
CELL PRESS
DOI: 10.1016/j.isci.2023.105978
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Domestication has affected the social organization of dogs compared to their closest relatives, gray wolves. Wolves rely on coordinated behavior for survival, while dogs have lower dependence on conspecifics, leading to greater cohesion in wolf packs. Hormonal responses differ between wolves and dogs, with oxytocin and glucocorticoid concentrations correlated with territorial behaviors and separation from the pack observed only in wolves.
Domestication has altered dogs' conspecific social organization compared to their closest, non-domesticated relatives, gray wolves. Wolves live in packs whose survival depends on coordinated behavior, but dogs rely less on conspecifics, which predicts greater cohesiveness in wolf than dog packs. Endocrine correlates such as oxytocin and glucocorticoids modulate group cohesion resulting in species-specific differences in social interactions. We found that although wolves' and dogs' observable behavioral reactions to a territorial threat and separation from the pack were similar, hormonal responses differed. Wolves' but not dogs' oxytocin and glucocorticoid concentrations correlated positively with territorial behaviors and only wolves showed increased glucocorticoid concentrations after separation from their pack. Together, results suggest stronger emotional activation to threats to group integrity in wolves than dogs, in line with their socio-ecology.
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