Fetched by a dog? (9)
I believe the answer is:
retrieved
'fetched' is the definition.
(retrieving is a kind of fetching)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for retrieved that I've seen before include "Got back, recovered" , "Tee driver (anag.)" , "Recovered, resurrected" .)