Olivia (animation)/WMG
All of the characters are pigs because they are actually a race of aliens.
These aliens slaughtered every human in the world and eventually took over.
The pigs are shapeshifting aliens in Shapeshifter Mode Lock.
This could explain why everyone is a pig. THEY ARE ALIEN SHAPESHIFTERS IN LOCK MODE! The Pigs Are A Result Of Genetic Mutation. Some Plague Or Virus Happened And Turned All Of The Humans Into Strange Pig Like Creatures.
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