Cartoon dog (6)

I think it could be either:

Which length description are you looking for?:

snoopy

'cartoon dog' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for snoopy that I've seen before include "Prying - cartoon dog" , "Brown dog's" , "Curious" , "Charlie Brown's cartoon dog" , "Charlie Brown's canine companion" .)

I've seen this clue in The Sun.

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