The crossword author's dog? (6)

I believe the answer is:

setter

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'dog?' is the definition.
(setter is a type of dog)

I don't understand how the remainder of the clue works.

(Other definitions for setter that I've seen before include "cement, perhaps?" , "Red - - , dog" , "Thematic type [DOG]" , "who is giving you problems right now?" , "Street (anag.)" .)

I've seen this clue in the Evening Standard.

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