A man has reportedly survived being attacked and dragged out his tent by a crocodile in the Northern Territory.

The 19-year-old was camping with family in the territory's Douglas Daly region when the attack happened about 4.30am on Monday, the ABC reports.

The NT Department of Health told to AAP a man is being treated with antibiotics in Katherine Hospital but would not say how he received his injuries.

The man was able to fight off the crocodile - believed to be a four metre saltwater - when it latched on to his right foot, reports say.

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He was left with puncture marks on his foot, NT News reports.

- AAP