Nguyen Hong Le and her one-year-old child were attacked by a crocodile Sunday as they walked near a water drainage area near their home in Can Tho City's Ninh Kieu District.
Le said she grabbed her child and ran into the house, shouting for help.
Several neighbors worked together for more than half an hour to catch the crocodile, which weighed more than 100 kg.
A man later arrived claiming to be the croc's owner and offered to pay the individuals to return the animal to him.
A police officer later arrived on the scene but did not formally report the incident.