Cat/puss endlessly walks around and misbehaves (4,2)

I believe the answer is:

acts up

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'misbehaves' is the definition.
(acting up is a kind of misbehaving)

I don't understand the rest of the clue.

(Other definitions for acts up that I've seen before include "Misbehaves badly" , "Behaves badly (colloq.)" , "Fails to function properly or behaves badly" , "Carries on" , "Malfunctions" .)

I've seen this clue in The Hindu.

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