Crossword Genius

They may fight though they're not boxers (8)

Ross

I believe the answer is:

terriers

I'm a little stuck... Click here to teach me more about this clue!

'boxers' is the definition.
The definition and answer can be both animals as well as being plural nouns.
Maybe there's an association between them I don't understand?

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for terriers that I've seen before include "Airedales, for example" , "Small short-bodied breeds of dogs" , "Part-time soldiers" , "eg Skye, Cairn and 18" .)

I've seen this clue in The Globe and Mail.
Want a hint initially instead of a full solution? Install my app