Duck with tattoos sounded like a pig (6)
I believe the answer is:
oinked
'sounded like a pig' is the definition.
(I've seen this in another clue)
'duck with tattoos' is the wordplay.
'duck' becomes 'o' (resembles zero - 'duck' in cricket).
'with' means one lot of letters go next to another.
'tattoos' becomes 'inked' (I am not sure about this - if you are sure you should believe this answer much more).
'o'+'inked'='OINKED'
Can you help me to learn more?
(Other definitions for oinked that I've seen before include "Made sound like cartoon pig" , "Sounded like pig pen" , "Made noise like cartoon pig" , "Grunted" , "Made a piglike noise" .)