Guidance for small dog without lead (4)
I believe the answer is:
help
'guidance' is the definition.
'small dog without lead' is the wordplay.
'small dog' becomes 'whelp'.
'without lead' means to remove the first letter.
'whelp' with its first letter taken away is 'HELP'.
'for' acts as a link.
(Other definitions for help that I've seen before include "Beatles' album; assist" , "I can't cope" , "record by the Beatles" , "Take what you want" , "Succour" .)