Hundreds of spectator crowd around the ring, cheering them on.
The prize? A pack of cigarettes and a mug for the owner of the winning dog.
The vicious dogfights you see in these pictures, which lasted over several days, were organised by six villagers in Sanjiao village in Jishan county in northern China’s Shanxi province.
They were held to mark the end of Chinese New Year, or Spring Festival in China.
Police have said the event did not breach any laws and that there have been no official complaints.
Dogfighting is illegal, but only if it involves bets.
Simply allowing the animals to fight purely for entertainment comes into a grey area where it is difficult to prosecute anyone involved.