In a scene that could be mistaken for a thriller movie, a 66-year-old Brazilian saved his grandson from the deadly trap of a 16-foot-long Anaconda by beating the snake with rocks and a knife for half an hour.

Joaquim Pereira told the Agencia Estado news service, "It was agonizing, I pulled it from one side, but it would come back on the other."

According to AP reports, the giant Anaconda attacked 8-year-old boy Mateus near a creek on his grandfather's ranch in the city of Cosmorama, about 250 miles northwest of Sao Paulo.

The boy was playing with friends when the huge reptile attacked and wrapped itself around him. Though the snake is not poisonous, but they kill their prey by coiling around them and squeezing until victims suffocate.

The boy's friends immediately rushed to get his grandfather, who fought with the snake until it released his grandson. The boy was rushed to a hospital and needed 21 stitches on his chest where he was bitten.