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Winners of BGT Jules O'Dwyer and Matisse (left) with Skippy the three legged dog (centre) and Chase the stunt dog (right) out and about in London, on 01 Jun 2015. Image Credit: Beretta/Sims/REX_Shutterstock

Producers of the popular Britain’s Got Talent TV show and the dog trainer who won the competition are coming under fire after a “doggie double” was used to perform a trick.

Border collie Matisse was replaced by a lookalike dog for a tightrope-walking sequence during the routine in Sunday night’s live final.

Producers Tuesday apologised to viewers who may have been unaware that trainer Jules O’Dwyer was using a team of dogs.

“We are sorry if this was not made clearer to the judges and the viewers at home during their final performance,” the producers said in a statement.

O’Dwyer said she is shocked by the public’s reaction, which has included a number of Twitter complaints.

She said she used the second dog, Chase, because Matisse is uncomfortable with heights.