system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do dogs lick people?
gpt
There could be several reasons.

 * To show submission to someone they recognize as dominant over them

 * To show intimacy with something else, which they learned from their mothers while young

 * To gather information about you through sweat and other things your skin secretes

 * You might taste really good

Licking also releases endorphins, which are chemicals in brains that make you feel good, so the dogs benefit even if they only lick due to instinct.