I just read a welsh article stating that SY took 4 dogs to PDL.
Strange, all the press photos of the publicised search sites there show only 2 of them.
Daily Express
Met Police to send sniffer dogs to shop where man with Madeleine McCann lookalike was seen
SCOTLAND Yard detectives want to send sniffer dogs into a shop where a man with a Madeleine McCann lookalike was seen around the time she vanished.
By: Gerard Couzens
Published: Fri, July 4, 2014
Officers fired off more than 250 questions at the four suspects, who include a 51-year-old heroin addict and 38-year-old ex Ocean Club worker.
*snippe*
They asked them: "Did you kill Madeleine?", and "Did You Hide Her Body?"
Afterwards two South Wales sniffer dogs similar to ones employed in ground searches in Praia da Luz last month swept one suspect's mum's car for any evidence Madeleine had been in it.
No evidence linking the vehicle to Madeleine was found and the police quizzes are not thought to have yielded any bombshell information.
----------------------------------------------------------------------------------------------------------------------------
Doesn't say if they were cadaver dogs or not.