The ounce for example is not officially approved (7)

I believe the answer is:

wildcat

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

'the ounce' is the definition.
The definition and answer can be both animals as well as being singular nouns.
Perhaps you can see an association between them that I don't see?

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for wildcat that I've seen before include "Animal - strike!" , "Commercially risky!" , "Lynx, for example" , "Animal (applied to strikes)" , "Well, kind of" .)

I've seen this clue in The Globe and Mail.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.