The story
From pet + regression, by analogy with age regression.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: The state of temporarily adopting the mindset of, or roleplaying as, an animal, especially when done as coping mechanism or less commonly simply for fun. Full definition →
From pet + regression, by analogy with age regression.
Etymology from Wiktionary, CC BY-SA 4.0.