When Mr. Whymper made his weekly visits to the farm, the animals intentionally made things appear better than they were. For example, "a few selected animals, mostly sheep, were instructed to remark casually in his hearing that rations had been increased" (p. 68). In another deception, the animals would fill the bins of food with sand, then put food only on the very top of the bin. This way, the bins would appear to be full of food to last the winter. For a while, this worked; "he was deceived, and continued to report to the outside world that there was no food shortage on Animal Farm" (p. 68).
Following the collapse of the windmill, humans outside of the farm refuse to believe that Snowball was responsible for destroying the structure. They understand that the walls of the windmill were too thin to hold up and do not believe Napoleon's lie. That January, food rations fall short and the animals begin to starve. In an attempt to conceal the dire situation from the outside world, Napoleon commands several animals, mostly sheep, to comment as they pass by Mr. Whymper that the food rations have increased. Napoleon then orders that empty food barrels be filled with sand and then have grain placed on top of the sand to give the impression that the barrels are full. They then lead Mr. Whymper through the storage shed to show him that there is actually an abundance of food. Mr. Whymper is deceived and tells the other humans outside of the farm that Animal Farm is a success.