Crossword Genius

Dog ultimately cocks leg, producing state of panic (8)

Ross

I believe the answer is:

tailspin

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

'state of panic' is the definition.
(I've seen this before)

'dog ultimately cocks leg' is the wordplay.
I cannot quite understand how this works, but
'dog' could be 'tail' (synonyms) and 'tail' is present in the answer.
'leg' could be 'pin' (pin is a kind of leg) and 'pin' is found in the answer.
A single letter 's' remains which might be clued in a way I don't see.
This explanation may well be incorrect...

'producing' is the link.

Can you help me to learn more?

(Other definitions for tailspin that I've seen before include "Chaotic situation" , "awful state" , "confused state" , "Spiral aeroplane dive" , "that could result in crash" .)

I've seen this clue in The Telegraph.
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