An excavator removes a dead bear at the zoo in Tbilisi, Georgia, June 17, 2015. Tigers, lions, bears and wolves were among more than 30 animals that escaped from a Georgian zoo and onto the streets of the capital Tbilisi on Sunday during floods that killed at least 12 people. REUTERS/David Mdzinarishvili TPX IMAGES OF THE DAY

A zoo keeper walks past dead bears at the zoo in Tbilisi, Georgia, June 17, 2015. Tigers, lions, bears and wolves were among more than 30 animals that escaped from a Georgian zoo and onto the streets of the capital Tbilisi on Sunday during floods that killed at least 12 people. REUTERS/David Mdzinarishvili TPX IMAGES OF THE DAY

Zoo keepers drag a dead lion at the zoo in Tbilisi, Georgia, June 17, 2015. Tigers, lions, bears and wolves were among more than 30 animals that escaped from a Georgian zoo and onto the streets of the capital Tbilisi on Sunday during floods that killed at least 12 people. REUTERS/David Mdzinarishvili 

A policeman stands next to a white tiger killed by police in Tbilisi, Georgia, June 17, 2015. Tigers, lions, bears and wolves were among more than 30 animals that escaped from a Georgian zoo and onto the streets of the capital Tbilisi on Sunday during floods that killed at least 12 people. REUTERS/Irakli Gedenidze 

A zoo keeper sprays water on Begi, a hippopotamus that escaped the zoo on Sunday, at a zoo in Tbilisi, Georgia, June 15, 2015. Tigers, lions, bears and wolves were among more than 30 animals that escaped from a Georgian zoo and onto the streets of the capital Tbilisi on Sunday during floods that killed at least 12 people. Local news agencies later reported more than half the animals had been returned to the zoo. REUTERS/David Mdzinarishvili 

Begi, a hippopotamus that escaped the zoo on Sunday, is seen at a zoo in Tbilisi, Georgia, June 15, 2015. Tigers, lions, bears and wolves were among more than 30 animals that escaped from a Georgian zoo and onto the streets of the capital Tbilisi on Sunday during floods that killed at least 12 people. Local news agencies later reported more than half the animals had been returned to the zoo. REUTERS/David Mdzinarishvili 

Dead animals lie on the ground at the zoo in Tbilisi, Georgia, June 15, 2015. Tigers, lions, bears and wolves were among more than 30 animals that escaped from a Georgian zoo and onto the streets of the capital Tbilisi on Sunday during floods that killed at least 12 people. REUTERS/David Mdzinarishvili 

Rescue workers drag a dead tiger at the zoo in Tbilisi, Georgia, June 15, 2015. Tigers, lions, bears and wolves were among more than 30 animals that escaped from a Georgian zoo and onto the streets of the capital Tbilisi on Sunday during floods that killed at least 12 people. REUTERS/David Mdzinarishvili 

Rescue workers drag a dead tiger at the zoo in Tbilisi, Georgia, June 15, 2015. Tigers, lions, bears and wolves were among more than 30 animals that escaped from a Georgian zoo and onto the streets of the capital Tbilisi on Sunday during floods that killed at least 12 people. REUTERS/David Mdzinarishvili 

A man directs a hippopotamus after it was shot with a tranquilizer dart at a flooded street in Tbilisi, Georgia, June 14, 2015. At least five people died and several are missing as a result of heavy rainfall and floods overnight in the Georgian capital Tbilisi, Georgian news agencies reported on Sunday. Animals from the city's zoo including tigers, lions, bears and wolves escaped from cages damaged by the rainfall. Some were captured or killed while the search for others goes on. REUTERS/Beso Gulashvili 

A hippopotamus walks across flooded street in Tbilisi, Georgia, June 14, 2015. At least five people died and several are missing as a result of heavy rainfall and floods overnight in the Georgian capital Tbilisi, Georgian news agencies reported on Sunday. Animals from the city's zoo including tigers, lions, bears and wolves escaped from cages damaged by the rainfall. Some were captured or killed while the search for others goes on. REUTERS/Beso Gulashvili TPX IMAGES OF THE DAY

A man shoots a tranquilizer dart to put a hippopotamus to sleep at a flooded street in Tbilisi, Georgia, June 14, 2015. At least five people died and several are missing as a result of heavy rainfall and floods overnight in the Georgian capital Tbilisi, Georgian news agencies reported on Sunday. Animals from the city's zoo including tigers, lions, bears and wolves escaped from cages damaged by the rainfall. Some were captured or killed while the search for others goes on. REUTERS/Beso Gulashvili 

A hippopotamus walks across flooded street in Tbilisi, Georgia, June 14, 2015. At least five people died and several are missing as a result of heavy rainfall and floods overnight in the Georgian capital Tbilisi, Georgian news agencies reported on Sunday. Animals from the city's zoo including tigers, lions, bears and wolves escaped from cages damaged by the rainfall. Some were captured or killed while the search for others goes on. REUTERS/Beso Gulashvili 

A serviceman stands near a hippopotamus at a flooded street in Tbilisi, Georgia, June 14, 2015. At least five people died and several are missing as a result of heavy rainfall and floods overnight in the Georgian capital Tbilisi, Georgian news agencies reported on Sunday. Animals from the city's zoo including tigers, lions, bears and wolves escaped from cages damaged by the rainfall. Some were captured or killed while the search for others goes on. REUTERS/Beso Gulashvili