The most common and most likely answer to this crossword clue is the 7 letter word EARBASH
E
A
R
B
A
S
H
Buddy explains!
The straight part
We know that "Perhaps Bruce’s rabbit" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case perhaps bruce’s rabbit = earbash.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 EARBASH mean?
EARBASH verb- To scold or lecture verbally.