I recently started filming the eurasian hamsters (C. cricetus) near where I live, and captured some interesting behaviour which I’m curious about. I asked a behavioural biologist friend of mine who’s done a lot of work with guinea pigs, but they weren’t sure about it. In “Clinical Anatomy of the Eurasian Hamster” I found one reference to courtship behaviour where females run in figure-eights, which is my best guess so far. There was another hamster nearby a few seconds before it started spinning, but it left quickly and didn’t return.
It’s at 0:57, in this clip: https://waterpigs.co.uk/notes/5D9NcJ/