Watch on Soap2day. There is a myth that bison are one of the only mammals immune to cancer, but this is false. A scientific journal from 2000 reports on one of the first instances found of cancer in bison: a mother who had to be euthanized. Excerpts of this finding are read as 16mm footage of bison (both painted and real) flicker on screen. Meanwhile, in digital, a mother lays in bed after her chemo treatment, surrounded by her paintings of animals.