inBOIL's separation from the group may have been related to the annihilation of the tigers, killed many years previously by the people. It is not clear to the reader whether the tigers were actual tigers, human beings or somehow anthropomorphic: they killed and ate people, including the narrator's parents, but they could also talk, sing, and play musical instruments, and were at least competent with arithmetic. Two tigers were killed on a bridge known later as the "abandoned" bridge. The last tiger was killed on a spot later developed into a trout farm.