Heavy flooding has destroyed enclosures at Tbilisi Zoo in Georgia allowing dangerous animals to roam the streets Among the animals to escape are tigers, lions, wolves and a hippo, which had to be subdued by a tranquiliser gun Flash flooding in the Georgian capital has already killed seven people including three who work at the zoo The capital of Georgia has been placed on lockdown after heavy flooding destroyed enclosures at the city's zoo allowing tigers, lions, wolves and a hippo to escape and roam the streets.