JUST IN: The Updated Seven Commandments Drama

A seemingly supernatural happening is striking Animal Farm.  The Seven Commandments that have been inscribed on the walls of the barn appear to be evolving.  I'll fly by the list one morning, and then when I fly by them again the next, a few words are changed.  I have no idea where they keep coming from, but I am noticing a correspondence between the events of the farm and the particular rule that is changed.  We have some rule-breakers on the farm...

BEFORE 1: Whatever goes upon two legs in an enemy
AFTER: Four legs is good, two legs is better.

Napoleon has begun to trade with humans, and Squealer has walked on his hind legs.  I also hear rumors about a human visit that is approaching.

BEFORE 2: Whatever goes upon four legs, or has wings, is a friend.

Though this rule has not changed on the barn wall, Napoleon's dogs have not been treating the other animals as friends, but just meat that can be disposed of along Napoleon's commands.

BEFORE 3: No animal shall wear clothes.
Although this rule has not changed on the barn wall either, I saw Napoleon put Mr. Jones's hat upon his own head and the dogs have worn collars.

BEFORE 4: No animal shall sleep in a bed.
AFTER: No animal shall sleep in a bed with sheets.
The pigs have taken to habit sleeping in the farmhouse beds with blankets.

BEFORE 5: No animal shall drink alcohol.
AFTER: No animal shall drink alcohol to excess.
Through the kitchen windows, I have witnessed the pigs drinking beer and whiskey at the Jones's table.

BEFORE 6: No animal shall kill any other animal.
AFTER: No animal shall kill any other animal without cause.
Napoleon's dogs slaughter any animal who have crossed Napoleon's line.

BEFORE 7: All animals are equal.
AFTER: All animals are equal, and some are more equal than others.

Has the world gone crazy?  How are these words changing?  I must find out...