Maybe instead of trying to cure the cancer, they should try to find out why all the devils are so angry.
from wiki:
...Females average four breeding seasons in their life and give birth to 20 to 30 live young after three weeks' gestation.
.... As there are only four nipples in the pouch, competition is fierce and few newborns survive.
30 pups, 4 nipples...gotta go viscious angry early to survive.