31 across
Collar
at
last
on
dog?
(5)
Collar at last on dog? (5)
hints
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The definition is at the end of the clue.
How the clue works
The definition is dog?, with the question mark flagging that Rover is a typical dog's name. The wordplay takes R (the last letter of "Collar at last") and adds OVER (meaning "on"), giving R + OVER = ROVER.