Tail chasing is a behaviour exhibited in dogs that is characterized by spinning in tight circles in either direction, and can be slow and focused on the tail or fast and unfocused. It is a compulsion similar to those seen in humans suffering from OCD. [https://en.wikipedia.org/wiki/Tail_chasing|Wikipedia. Tail Chasing]
1. To be very busy or working very hard at some task but accomplishing little or nothing as a result; to be engaged in some fruitless or futile task or endeavor. Likened to a dog running in circles trying to catch its own tail. https://idioms.thefreedictionary.com/be+chasing+tail
2. To exert oneself vigorously but ineffectually. https://idioms.thefreedictionary.com/chasing+his+tail
3. To go round and round.
"This also means that we should know why the inward explosion, which basically causes motion in this zero universe, is a centripetal spiral, and why it is returned by radar to the zero of its source as a centrifugal spiral. " [Atomic Suicide, page 287]