Shy female kangaroos have fewer 'friends' but gather in larger groups than bolder individuals

Making friends and acquaintances is not a random act for kangaroos, instead they actively choose who they mix with and how often. Female eastern grey kangaroos have been shown to spend time with some other females while avoiding others altogether. Kangaroos live in a fission-fusion society, characterised by frequent changes of group membership, with individuals moving between temporary feeding groups and switching groups many times a day.

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