Fancy business in dogs' mush (6)

I believe the answer is:

doings

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

'fancy business' is the definition.
'doings' can be an answer for 'business' (thesaurus). I'm unsure of the 'fancy' bit.

'in dogs' mush' is the wordplay.
'mush' indicates an anagram (I've seen 'mushed' mean this (the letters are mushed up)).
'in'+'dogs'='indogs'
'indogs' with letters rearranged gives 'DOINGS'.

Can you help me to learn more?

(Other definitions for doings that I've seen before include "Thingamy's" , "Activities" .)

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

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