'Animal Farm' is usually seen as an analogy to the revolution in Russia and the developements thereafter.
The revolution in Russia was directed against a social structure comprising a peasantry with few rights at the bottom and an aristocracy at the top, ruled by an absolutist monarch mostly concerned with maintaining the privileges of the aristocracy on which his own authority was dependent.
If Animal Farm is an analogy to the Russian revolution- where are the aristocrats on the farm prior to the revolution staged by the animals?
They remove the farmer; but the only "aristocrats" appear to be the pigs:
The aristocracy coming into being--
after the revolution...?
The absence of an aristocracy in the scenario to my mind means that the analogy with Russia is limping; the farmer looks more like a dictator-- like Hitler, complete with the horrors found in his house after he's gone:
Like half pigs, legs of lamb and headless chicken.
In which case the farm is not an analogy to any particular country- but to Europe as a whole:
A place with many different kinds of animals, like German animals, French animals, Italian animals... ... ...
And those dragged off to concentration-camps were treated like animals, regardless of nationality.