Devil Facial Tumor Disease (DFTD) is a contagious cancer that affects the Tasmanian devil, a carnivorous marsupial native to Tasmania. This disease is characterized by the growth of tumors on the face and mouth of the affected animals, making it difficult for them to eat and leading to a decline in their population. DFTD is transmitted through biting, which is common during the devils' aggressive social interactions. Since its discovery in the late 1990s, the disease has significantly impacted the Tasmanian devil population, leading to conservation efforts aimed at protecting this species from extinction.