A carpet of brown greeted Matt Lovenfosse as he pulled up to his home on Monday morning. “So I went out to have a look and it was millions of spiders,” he says. They were running ahead of flood water rising up from Kinchela Creek, pouring across the back of Lovenfosse’s property on the mid-north coast of New South Wales. The spiders aren’t the only animals he has spotted fleeing the floods. “When...