What breed of the dog it is fluke from the movie ''fluke''?

Answer 1

nah uh. dyed? no...

It is possible that Fluke was mixed, possibly part Lab. I however think he was a Flat-Coated Retriever. If you look them up, you'd see they look almost exactly like Golden Retrievers with a long wavy coat but they come in darker, different colors such as liver and black. Golden Retrievers have thicker and wavier coats whereas Flat-Coated Retrievers, like the name implies, have flatter and thinner coats.