Harry, a character in Wind in the Willows (6)
I believe the answer is:
badger
This clue is a double definition.
'harry' is the first definition.
(both can mean to bother or harass)
'a character in wind in the willows' is the second definition.
(character in the novel The Wind in the Willows)
(Other definitions for badger that I've seen before include "Pester - nocturnal animal" , "Grab Ed from the animal" , "Harass - brock" , "Black and white striped animal" , "Harass, pester" .)