The other day on lunch break I was doing research on CML and I came across this case of a Jaguar who developed CML while in captivity at a zoo in Texas. The veterinarian comments that this is an extemely rare leukemia for animals and even humans. It doesn't appear that they're going to study the animal but are placing it in hospice.
https://ktxs.com/news/abilene/four-year-old-jaguar-at-abilene-zoo-diagno...
I know that CML is associated with radiation exposure; however, cases like this seem to suggest there is something more at work when animals who would have no track record of occupational exposure are developing the disease. Its possible the stress from adapting to a new domestic environment from its natural habitat has stimulated the progression of the disease. Could always just be an outlier.