Because we consider ourselves to be better or higher life forms than animals(especially pigs) showing them to be the same as or better than us is a good satirical tool for exposing human folly or for showing human behavior to be animalistic. In animal farm George Orwell uses animals to represent specific people and also uses the tribulations of the animal society as a metaphor for the Russian revolution. Animals that are considered noble (such as horses) can also be used to proved lessons on how humans should behave. In Gulliver's Travels Jonathan Swift does the opposite, using a society of horses as a metaphor for idyllic morals, values, and as a lesson on how we, as people, should live o