What is the mood in this?

serious

Explanation:

it sounds formal and has no expression; it is serious

the mood is dark almost horrorish. The author uses phrases like, "the room is empty, but sunlight pouring through two high windows in the back wall" and "The room is solemn, even forbidding" to help you create an image of what the setting is.

Explanation:

normally working animals are domesticated and ruled by a master, a domesticator (tamer), to perform basic and important functions on a farm, for example. the value used in this context is animal labor in exchange for food. it is not so much a contrast to the story told by napoleon and the pigs, since the animals of that particular farm also performed functions on the farm through domestication. the only thing is that in this case, who rules them is a pig, also an animal, but very respected, to whom the other animals lent him submission. that's about a strong relationship of dependency between animal and owner.