Crossword Genius

Ex-monk moved to take in us long-haired creatures (4,4)

Ross

I believe the answer is:

musk oxen

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

'ex-monk moved to take' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'us long-haired creatures' is the wordplay.
I cannot quite understand how this works, but
'us' is found in the answer.
'creatures' could be 'oxen' (I have seen 'Bovine creatures ' mean 'oxen' so perhaps 'creatures' could also mean 'oxen') and 'oxen' is present in the answer.
This may be the basis of clue (or it may be nonsense).

'in' acts as a link.

Can you help me to learn more?

I've seen this clue in The Independent.
Want a hint initially instead of a full solution? Install my app