Crossword Genius

On request, agree to hold an animal (4)

Ross

I believe the answer is:

stag

'an animal' is the definition.
(stag is a kind of animal)

'on request agree to hold' is the wordplay.
'to hold' indicates a hidden word (I've seen 'holds' mean this).
'STAG' can be found hidden inside 'on request agree'.

(Other definitions for stag that I've seen before include "Male-only" , "Male animal" , "without female escort" , "Animal - for men only" , "This party is for men only" .)

I've seen this clue in The Globe and Mail.
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