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Hooligans have been told they will face police dogs trained to bite “directly in the testicles” if trouble kicks off.

Poland’s police squads are also ready to use shotguns, handguns with live ammo and water cannon on violent fans.

English language newspaper the Krakow Post issued “10 tips to stay safe and legal in Poland this summer”.

It warned police dogs were trained to "bite you directly in the testicles."

It continued: "Polish police are going to come down on troublemakers like a bag full of anvils and you don't want to be there when it happens.

"These lads' mums and and dads rioted under Soviet machine guns - a few chairs thrown by beered up fans is not going to intimidate them."

But it tried to reassure potential hooligans that shotgun-fired baton rounds are not designed to kill – “as long as you are 30 metres away”.

The paper added: “Police will also not tolerate public ­drunkenness, drinking and driving and will demand respect is shown to women and children.”