Disturbance caused by strange tailless cat (6)
I believe the answer is:
rumpus
'disturbance' is the definition.
(rumpus is a kind of disturbance)
'strange tailless cat' is the wordplay.
'strange' becomes 'rum' (I've seen this before).
'tailless' means to remove the last letter.
'cat' becomes 'puss' (puss is a kind of cat).
'puss' with its final letter taken away is 'pus'.
'rum'+'pus'='RUMPUS'
'caused by' is the link.
(Other definitions for rumpus that I've seen before include "Tumult" , "To-do" , "Row" , "Hullabaloo" , "Harsh rough nature" .)