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 not certain 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' is an insertion indicator.
'one' becomes 'i' (Roman numeral).
'character' with letters rearranged gives 'arctchare'.
'arctchare' going 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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