Bollywood megastar Amitabh Bachchan, who shot with six kids for an ad film, says working with children can be as unpredictable as working with animals.

"Shooting with a bunch of the most fiery, well spoken, know it all kids...incredible conversations with them...its an education! It's the toughest job to shoot with kids...and also animals.

You never know what they will do next, " Amitabh posted on micro-blogging site Twitter, late Monday night. The 68-year-old shot with the kids at the Big ND Studios in Karjat for an ad campaign for FORCE Motors, and drove around in an SUV.

The experience left him in awe of the children's intellect. "Everyone warned me the drive would be a killer, but it was most pleasant and the roads were not too bad either. Most of today's shoot inside the SUV with six kids... we didn't get out, no one called us out either...fantastic listening to them.

"To the fastest cars, and the latest gossip both film and political, they knew it all...and what performers...sensational!" said the actor, who was seems to have.

One of the kids actually utilising the time spent locked inside the car, by doing his own marketing for his released film, " added Big B who featured with an eagle in "Coolie" and a dog in "Mard".