Viewers have complained about 'Britain's Got Talent' winner Jules O'Dwyer's use of a dog double for her canine high-wire trick in Sunday's final.
Winning duo Jules and Matisse performed a cops and robbers routine - which featured a mixture of dog agility and storytelling - that saw them beat magician Jamie Raven to the £250,000 prize.
But it wasn't only the public who were unaware that the act's climax was performed by a border collie lookalike called Chase - even 'BGT' boss Simon Cowell was not in on the secret.
There were reports that Cowell was shocked at the revelation and that he had "no idea". He has apparently ordered an investigation to discover why producers kept the information from the public.
Trainer Jules (49) made the announcement on ITV's 'Lorraine' show, saying: "Matisse is a bit afraid of heights so although he could officially do it, Chase is the action dog, so he plays the double."
Jules used a team of three dogs in all of her BGT performances. Skippy and Chase, also border collies, were used in the auditions and semi-final rounds. O'Dwyer has insisted that swapping Matisse for Chase in the final was not cheating the public.
"I was just putting on a show - it was not my intention to deceive people. We have never hidden the fact we have used a multitude of dogs," she said.
BGT producers said: "During the competition viewers have seen that Jules's act involves a team of dogs, including Chase and Skippy, alongside starring dog Matisse...We are sorry if this was not made clearer to the judges and viewers at home during their final performance."