Britney trainers respond to PETA

The owner of elephants used by Britney Spears in her latest video have hit back at criticism from PETA that the animals were unfairly treated.

The promo for 'Circus' features the singer in the role of "ringleader" surrounded by the animals as she dances.

Trainer Kari Johnson told MTV News that the elephants were carefully monitored during filming by a representative from the American Humane Association.

"A representative was on the set of the Britney Spears 'Circus' video with our elephants, Tai and Kitty, to ensure their safety and welfare," she said.

"Britney, the director, producers and the entire crew were respectful of the elephants' needs and comfort and a pleasure to work with."