Rats

"[city laws were] designed to penalize homeowners for failing to take steps to prevent and control rodents"

"There are so many different roles that the rat plays in human life. When it is an object of admiration it is usually in, say, the show cage at an exhibition, or in a laboratory cage (where is has often been described as a hero/heroine or martyr to science). In the wild, or in the margins of human life, the rat is commonly loathed, the object of vermin control. Either way, one could say that it loses."

"Rats and mice are not generally regarded as pets, but as pests; they have few defenders. Yet the pain a rat or a mouse feels is every bit as real as that of any pet. In laboratories, they suffer, as anybody who has heard them moan, cry, whimper and even scream knows. The experimenters dissimulate about this by insisting that they are merely vocalising."

"If a rat is a good model for your emotional life, you're in big trouble."

"How now? a rat? Dead, for a ducat, dead!"