This is the horrific moment a crazed pit bull sank its teeth into the leg of a terrified child and refused to let go.
The frenzied attack was filmed by a passerby at a pet store in Chongqing Municipality's Dazu District in south-western China.
Footage shows how the young boy, believed to have the surname Wu, struggles to break free from the clamped jaw of the vicious beast.
The four-year-old boy had been walking when the animal pounced.
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