| Quote #1
She watched them for quite a long time. It was obvious that they knew exactly what they were doing, and they looked as well drilled as a group of soldiers. (5.25)
Since we see this through Mrs. Frisby's eyes, we are able to see how strange this looks to another member of the animal kingdom. Comparing the rats to soldiers also makes us think that they are more human than rat.
| Quote #2
The rats on Mr. Fitzgibbon's farm just kept to themselves.
One did not prowl in their domain. (9.41-42)
None of the animals are quite sure why they avoid the rats; they just have a feeling that they should stay away. This feeling does a lot to keep the groups of animals on the farm separate from one another and makes it hard for them to team up.
| Quote #3
"You might call him our chief engineer […] as, indeed, you might call Justin the captain of the guard—if we had any such titles, but we don't." (13.2)
Are you scratching your head here like we are? Do they have titles or not? It's a little confusing, but this means that the rats all have specific jobs, but that their job only refers to what they do—not what they are. This may mean that the rats are shooting for greater equality, which is certainly a goal to be proud of.