Daryl Lehmann from Darwin, Australia, was returning from a fishing trip with his family on the South Alligator River on Sunday afternoon when his grandsons spotted the predators.
“They said, ‘look at those crocs’ and I quickly got the phone out,” Daryl Lehmann told 9NEWS.com.au.
Video filmed by Mr Lehmann shows the predators approaching the floating buffalo, which he said had been earlier spotted by his son on Friday.
The pair of crocodiles then decide to attack each other, hurling their tails into the air and locking jaws as water splashes into the sky.
The experienced fisherman estimates the crocodile seen on the right of the video was “at least four metres long.”
After just seconds of brawling, the duo of crocs are shown swimming away into the murky depths of the river.
Watch it below:
It should be recalled that an Australian jogger was savagely attacked by a kangaroo in suburban Melbourne on Saturday.