Radioactive material released by the Chernobyl accident is claimed to have created one of the largest ecological sinks ever observed. Carnivores are keystone species and those living in Chernobyl accumulate high levels of radiation that may cause negative impacts such as reduced immune function and lifespan, yet little is known about this in wildlife. I will investigate parasite and disease rates in wolves and raccoon dogs to quantify radiation effects on health in these populations.