This is the terrifying moment a humiliated rollerskating circus bear hits back at its cruel trainer in front of screaming children under a big top in Russia.

Female bear Dzhema was being forced to do tricks for the ironically named ‘Happiness Show’ at the Mash Circus in Obninsk, in the Kaluga region, on 1st June.

Shocking audience video footage shows trainer Oleg Krasov forcing Dzhema to sit in a chair with a pair of rollerskates tied to her rear paws.

Suddenly, he grabs her fur forcefully and pulls her up sharply on her hind legs as he shoves her to start her moving.

But as Krasov contemptuously turns his back to her, Dzhema sees a chance to get her revenge and charges him as she drops onto all fours.

The powerful bear floors her trainer with a flurry of massive blows with her front paws as parents rush their screaming children from the arena.

The footage ends with Dzhema towering over her stricken keeper as circus workers try to stop her.

Astonishingly local media reports said that Krasov survived without any serious injury.

Circus management later tried to pass off the attack as “normal”.

They said in a statement: “She did not hurt him at all. She was actually playing with him.

“These are her normal actions. She loves him.”