Police found the man's damaged and overturned 8-foot dinghy at around 2.30 a.m. on Friday. The man has not yet been recovered, officials said.
The enormous 16-foot reptile was seen lurking in a shallow river in Western Australia's remote Kimberley Region.
The child reportedly put his hand through a fence in an attempt to pat the predator.
The reptile, estimated to be up to eight feet long, has been reported to local authorities but has not yet been captured, officials said in a Facebook post.
"It is hard to imagine what would motivate someone to do that to an animal. It is beyond belief. It is deplorable," said local wildlife agency chief Lindsay Delzoppo in a statement.
Brian Ahrens from the town of Humpty Doo had to fight off the predator to catch a barramundi.
"Puppy dog nearly got taken by a croc," wrote the person who uploaded the video of the close encounter to Facebook. "Heart was pounding as we all tried to call the puppy back."
A 33-year-old man was taken to hospital by personnel from the Royal Flying Doctor Service, and is reportedly in a stable condition.
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"There's... crocodiles in the proximity of where the vessel was located and other marine activity that would be quite concerning if someone were to have entered the water," one police officer said.
NT Police Watch Commander Siiri Tennosaar described the 23-year-old as the "luckiest man alive" after he escaped the encounter without life-threatening injuries.
The injured crocodile was found with a steel arrow piercing its body and several stab wounds to its neck and throat in northern Queensland, Australia.
Coree Summerville had been fishing at The Strand Pier in Townsville in Queensland, Australia, when he spotted a struggling turtle.
Zoo officials shot a crocodile after it became aggressive and bit a keeper's hand on Monday.
The plate was found after a crocodile known as "MJ" died in July, near Rockhampton, Queensland, Australia.
Craig Dickmann was fishing when the animal struck.
"It's a good time to warn people about getting close to the water's edge when you're not attuned to the ways of nature," said Noel Waterman of the Indigenous Knowledge Centre.
Elston Lami Lami, 42, said the attack occurred as he was hunting with a relative and two dogs on Saturday close to Minjilang on Croker Island, local media reported.
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Mavis Mohlala was on her way to attend a church service when she was attacked by a crocodile. She died four days later.
The new species is unique to New Guinea—the world's second-largest island.
It is illegal to interfere with the animals in Australia.
The boy was killed in the southern Philippines when he was yanked into the water in front of his horrified family.
The "large male American crocodile" had been courting a female in the Everglades National Park.
The plate is thought to have been in the reptile's stomach for up to 40 years.
Deasy Tuwo, 44, was found by her colleagues the following morning.
Crocodiles in Florida rarely pose a threat to humans, but small pets may be attacked.
It's roughly the same length as the average family car.