Elephants and tigers entertain public in cities along staggering 16,000km (9,950 mile) route.
Elephants Magda and Jenny are poised to return to the circus ring after being saved from the intense Siberian cold - by vodka.
Less-than-lissom lions have been fed on junk food in captivity, says expert.
Runaway duo blocks traffic in the centre of the city as they splash in the snow.
Rodents also 'put in bottles and thrown to audience', claim protesters.
Angry big cat rushed at Lyubov Yakovleva, 53, tearing flesh from her arm with its teeth.
A dramatic operation in biting cold of minus 41C saved elephants Magda and Jenny from death after a fire in the trailer carrying them across Siberia.
The 80-kilogram female was 'running wild' and endangering passengers, but was later found dead.
Tigre de Cristal under fire for 'abusing' rare big cat to promote gambling revolution.