showing that we enjoy something, or feel safe, and advertising that fact to the other pack members around us (as opposed to a warning or panic noise for example)
belonging to the group - showing that we fit in to the rest of our group and aren't an outsider (consider "that humourless bastard" who never quite fits in, or the "has no idea what just happened but is laughing anyway" people)
Shtercus t1_jac2pkd wrote
Reply to ELI5: Why do we push out weird noises when something is funny? by PeakKey4068
pack/tribe behaviour, for a couple main reasons:
showing that we enjoy something, or feel safe, and advertising that fact to the other pack members around us (as opposed to a warning or panic noise for example)
belonging to the group - showing that we fit in to the rest of our group and aren't an outsider (consider "that humourless bastard" who never quite fits in, or the "has no idea what just happened but is laughing anyway" people)