The predators have made their way into the town of Ingham towards the country’s north-east tip, according to several residents’ photos which have been posted on social media.
This comes after four days of torrential rain broke river banks, covered pastureland and cut off towns.
Toby Millyard, crocodile researcher at Australia Zoo in Queensland, said the reptiles were known to use flood waters in the region to travel to different areas and search for food.
Mr Millyard said: “Some crocodiles love it when it rains and they use the water’s currents to travel; they’re very smart animals.
“But they’re very easy to stay away from. As long as you’re not in the water or standing by the edge, then you should be fine.”
On one occasion a crocodile was seen lunging at a vehicle.
Black snakes and bull sharks have been seen swiming along flooded roads.
On Sunday morning, a group of school students and teachers stranded by floods were rescued from a isolated campsite south of the town of Tully, a Queensland Fire and Emergency Services (QFES) spokesman said.
Queensland state premier Annastacia Palaszczuk told media that it would take several weeks to determine the full extent of the damage, especially on banana and sugar cane crops.
The Queensland state government has declared the area a “disaster” zone, while the Insurance Council of Australia has declared it a “catastrophe”, which means that insurance claims will be fast-tracked.
Footage from the state’s Herbert River also showed a huntsman spider clinging to a branch.
Brave locals broke the branch with the spider attached and moved the arachnid to a avocado tree in the town centre.
Other shocking reports include breakins and assaults in the north of the state. Police said in one incident two offenders broke into a house in Ingham and attacked the homeowner with a basball bat.
A sporting goods store in the same town was also broken into.
The huge floods are expected to also see a reduced supply in bananas as well as a hike in prices of the fruit.
The extent of crop losses will be known in the coming days as farmers are not currently able to inspect crops due to the flooding.
North Queensland supplies 95 percent of the country’s bananas.
Tully Valley banana grower Leon Collins told ABC: “After 48 hours of water being in a paddock you start to get major loss and some of them have definitely had more than that.
“It won’t be a pretty sight over the next week around the farms in Tully, in the valley where you can see these bunches of trees chopped down.”