Napoleon or Snowball, in "Animal Farm" (3)
I believe the answer is:
pig
I believe this is a double definition.
'napoleon' is the first definition.
(Napoleon is a pig in George Orwell's Animal Farm)
'snowball in animal farm' is the second definition.
(I've seen this in another clue)
(Other definitions for pig that I've seen before include "Eg, sow" , "Glutton" , "person who eats too much" , "Difficult task" , "& 16 Animal pen" .)