What are the most useful diagnostic technology for cancer? how can early detection increase the chance of survival?

Early detection is important because when abnormal tissue or cancer is found early, it may be easier to treat. By the time symptoms appear, cancer may have begun to spread and be harder to treat. Several screening tests have been shown to detect cancer early and to reduce the chance of dying from that cancer

feral cats are estimated to eat tens of millions of native animals each night in australia

the answer to your question is tooth decay.