Crossword Genius

Tigers possibly found in oil wells (4,4)

Ross

I believe the answer is:

wild cats

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

'in oil wells' is the definition.
I know nothing about this answer so I can't tell whether this works.

'tigers possibly' is the wordplay.
I cannot really understand how this works, but
'tigers possibly' could be 'cats' (tiger is a kind of cat) and 'cats' is located in the answer.
The remaining letters 'wild' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).

'found' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.
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