Firefighters have said they have finally brought Australia's largest "megablaze" under control. They said wet weather is likely to deliver much-needed respite for the countryside ravaged by bushfires.<br />''<br />'' Meanwhile, residents and authorities continued to come to grips with the scale of devastation. The Bureau of Meteorology also forecast that some fire-grounds could get up to 50 millimetres of rain in the next week. Australia's unique flora and fauna has taken a catastrophic hit, with an estimated one billion animals killed, and countless trees and shrubs burned away.<br />