The most common and most likely answer to this crossword clue is the 3 plus 6 letter word RED SETTER
R
E
D
S
E
T
T
E
R
More clues leading to the result RED SETTER
- Dog re-homed initially with my boss and myself?
- Dog looking so embarrassed by me?
- Ruddy fellow providing the clues — a dog!
- Embarrassed, left abandoning colonist's best friend?
- About to get Grauniad’s ultimate compiler a dog
- Revolutionary supplier of crossword is one identifying the game
- Pet maybe making me very embarrassed!
- Gun dog’s promise of a good day ahead?
- Gundog inflamed compiler
- Sun must support leftie, being man’s best friend
Buddy explains!

The straight part
We know that "Dog" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dog = red setter.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.