Character running to catch one creature in the north (6,4)

I believe the answer is:

arctic hare

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'creature in the north' is the definition.
'arctic hare' can be an answer for 'creature' (I've seen this before). I am unsure of the 'in the north' bit.

'character running to catch one' is the wordplay.
'running' indicates anagramming the letters (the letters run around to different places).
'to catch' indicates putting letters inside.
'one' becomes 'i' (Roman numeral).
'character' anagrammed gives 'arctchare'.
'arctchare' placed around 'i' is 'ARCTIC HARE'.

Can you help me to learn more?

(Another definition for arctic hare that I've seen is " Animal".)

I've seen this clue in The Times.

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