Question: dog breeds that are difficult to train?
Answer: Bulldogs. The bulldog may be intelligent, but they are very stubborn animals. ... 
Pekingese. A Pekingese might be small, but they have very independent, dominating personalities. ... 
Basset Hounds. ... 
Bull Mastiff. ... 
Chow Chow. ... 
Poodles. ... 
German Shepherd. ... 
Labrador Retriever / Golden Retriever.