Bit of advice for dog (7)
I believe the answer is:
pointer
This might be a double definition.
'bit of advice' is the first definition.
'pointer' can be an answer for 'advice' (thesaurus). I'm not certain of the 'bit of' bit.
'for dog' is the second definition.
(pointer is a kind of dog)
Can you help me to learn more?
(Other definitions for pointer that I've seen before include "something moved by mouse" , "Tip; dog" , "Arrow" , "The dog provides an indication" , "Hint (for a dog?)" .)