Fido at last caught, dog collar is going on (9)

I believe the answer is:

occurring

'is going on' is the definition.
(thesaurus)

'fido at last caught dog collar' is the wordplay.
'at last' says to take the final letters.
'caught' becomes 'c' (cricket abbreviation).
'dog' becomes 'cur' (cur is a kind of dog).
'collar' becomes 'ring' (a collar can be a ring-shaped machine part).
The last letter of 'fido' is 'o'.
'o'+'c'+'cur'+'ring'='OCCURRING'

I've seen this clue in The Times.

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