The most common and most likely answer to this crossword clue is the 8 letter word AIREDALE
I've seen this crossword clue in The Sunday Telegraph
A
I
R
E
D
A
L
E
More clues leading to the result AIREDALE
- It's barking to have wine and beer on the road
- Dog whacked, head dropping after a wallop
- Broadcast by possible porter’s best friend?
- Yorkshire terrier cooled off, with something to drink
- Barker put on TV with porter
- Dog used to publicise beer
- Dog brought up beer
- Gassy beer maybe for dog?
- Excellent coloured drink for dog
- Big dog very good about change of lead
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 = airedale.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.
What does AIREDALE mean?
AIREDALE noun- An Airedale terrier.
- A member of aviation personnel.