The most common and most likely answer to this crossword clue is the 7 letter word JACKALS
I've seen this crossword clue in Financial Times
J
A
C
K
A
L
S
More clues leading to the result JACKALS
Buddy explains!

The straight part
We know that "canines" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case canines = jackals.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 JACKALS mean?
JACKALS noun- Any of certain wild canids of the genus Canis, native to the tropical Old World and smaller than a wolf.
- A person who performs menial/routine tasks, a dogsbody.
- A person who behaves in an opportunistic way; especially a base collaborator.
- A jack (the playing card).
- To perform menial or routine tasks