Frog jump contest - Great Croatia tradition

Traditional competition in frog jumps, is unique, and is maintained only in the town named LOKVE in Croatia.
Before competition the locals say that they catch them at night, of course only unprotected species.
Temporary owners and trainer of frogs by knocking on the "frog-drom", shouting and blowing, try to motivate the frog to the best jump, but touching the animal is a violation of the rules of the game:)