Crossword Genius

Dogs no longer need this freedom (7)

Ross

I believe the answer is:

licence

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'this freedom' is the definition.
(licence is a kind of freedom)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for licence that I've seen before include "Authority - or freedom!" , "Driving permit" , "Permit to operate" , "-- plate; poetic --" , "Legal document giving official permission" .)

I've seen this clue in The Sun.
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