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Maybe hearing, hunting and pouncing in US range (9)

Ross

I believe the answer is:

catskills

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

'range' is the definition.
(I know that Catskills is a range)

I don't understand how the rest of the clue works.

Can you help me to learn more?

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