What are the oldest living animals?
Giant Tortoises can live to be almost 200 years old. The oldest known tortoise is believed to be 182.
It is believed that the Tuatara can live to 200 years old given the right circumstances.
There is no "oldest non-living thing" unless you consider a virus to be non-living, and their evolution cannot be reliably determined. The oldest living things are animals such as tortoises, lobsters, clams and mussels. Colonies of organisms such as funguses, sponges, coral, and aspen trees live a long time because they create or clone new individuals. (see the related questions)