The most common and most likely answer to this crossword clue is the 8 letter word MALEMUTE
I've seen this crossword clue in The Times
M
A
L
E
M
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More clues leading to the result MALEMUTE
Buddy explains!
The straight part
We know that "Only bitch barks in this breed" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case only bitch barks in this breed = malemute.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 MALEMUTE mean?
MALEMUTE noun- A ancient northern breed of dog of the husky type, particularly used as a sled dog.