Domestically particular expert on river, feeding hound regularly (5-5)
I believe the answer is:
house-proud
'domestically particular' is the definition.
Both the answer and definition are adjectives. Perhaps you can see a link between them that I don't see?
'expert on river feeding hound regularly' is the wordplay.
I cannot quite see how this works, but
'expert' could be 'pro' (short for professional) and 'pro' is present in the answer.
'river' could be 'ouse' (Yorkshire river) and 'ouse' is found in the answer.
The remaining letters 'hud' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for house-proud that I've seen is " Very tidy at home".)