Flood Warning in North Queensland

On February 4th (because Australia is a couple hours ahead of us), the Australia military rushed to the scene of a flood in North Queensland (http://www.news.com.au/story/0,27574,25006238-1248,00.html). Homes and retail stores were destroyed and the flood levels were higher than they were in 1974, when a major flood hit. They are continuing evalutaion to make sure everyone is safe from the disaster. They can only predict it will get worse.
The aspect of this article that shocked me the most was that crocodiles were what was interupting the rescue plan. Many have been spotted in the center of the Gulf towns. Ms. Smith, a hotel owner, said she saw "a 4m crocodile had been seen stalking residents and dogs in the flooded main street". This was perhaps the wierdest thing I could imagine. What bothered me the most about this article where do these Australian crocodiles come from. I have never heard of them bothering flood rescues before. However, this flood is quite a historic event and the crocodiles, no matter how few, have definitly made an impact on this current news story.