Muriel Benetulier wanted to be photographed with the crocodile and tried to get close to the reptile. She squatted near the crocodile and had a photo taken. But as she was getting up, she tipped to one side and the crocodile snapped her left leg, authorities at the national park said.
She suffered a severe bite wound, said Thanya Netithammakul, head of the National Park, Wildlife and Plant Conservation Department.
He said the incident was reported by the park chief, Kanchit Srinoppawan. Thanya said that tourists nearby said Ms Benetulier visited the park with her husband and the couple came across a crocodile lurking in the water.
Thanya said that signboards were put up warning visitors about the crocodiles. Tourists were told to keep to the nature trail. Park staff were also stationed along the route to offer assistance.