Who said "Whatever goes upon two legs is an enemy."?

This quote is attributed to Snowball.

Whatever goes upon two legs is an enemy. - Snowball

"Whatever goes upon two legs is an enemy."

Snowball Leadership

Character in Animal Farm

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"The revolution is betrayed"

"The windmill represents progress"

"No animal shall sleep in a bed."

"No animal shall drink alcohol."

"A leader must be fair and just."

"Integrity is everything."

"One must take responsibility for one's environment."

"In this house, I make the decisions"