Fiction about fool and a helpful dog (6)
I believe the answer is:
lassie
'a helpful dog' is the definition.
'lassie' can be an answer for 'dog' (I've seen this before). I am not sure about the 'a helpful' bit.
'fiction about fool' is the wordplay.
'fiction' becomes 'lie' (fiction can mean a lie or fabrication).
'about' means one lot of letters goes inside another.
'fool' becomes 'ass' (both can mean a stupid person).
'lie' going around 'ass' is 'LASSIE'.
'and' acts as a link.
Can you help me to learn more?
(Other definitions for lassie that I've seen before include "Collie featuring in many films" , "Film and TV dog" , "girl found" , "Scots girl - film dog" , "Hollywood film-star dog" .)