We have seen (below) the use of animal attribution in the Stalinist vilification of enemies. Here are some examples of this device in Hitler's hate message against the Jews. All quotations are from Mein Kampf as translated by Ralph Manheim, Sentry Edition, 1962, pp. 300-327.
Their [Jewish] apparently great sense of solidarity is based on the very primitive herd instinct that is seen in many other living creatures... The same pack of wolves which has fallen on its prey together disintegrates when hunger abates ... The same is true of horses which try to defend themselves ... in a body, but scatter again ...
...the [Jewish] qualities of egoism come into their own, and in the twinling of an eye the united people truns into a horde of rats, fighting bloodily among themselves.
the Jew ... is mostly found in the art which seems to require least original invention, the art of acting. But even here, in reality, he is only a 'juggler,' or rather an ape;
he was never a nomad, but only and always a parasite in the body of other peoples.
His spreading is a typical phenomenon for all parasites; he always seeks a new feeding ground for his race.
His blood-sucking tyranny becomes so great ...
... the eternal blood-sucker ..
he adds to .. financial straits .. by crawling around ..
he has squeezed and sucked their blood again and again...
With satanic joy in his face, the black-haired Jewish youth lurks in wait for the unsuspecting girl whom he defiles ..