Rottie Cocker

What are the hardest dogs to potty train?

No matter the breed, the hardest dogs to potty train are those that do not respect their owner. The 16 Breeds that are the Hardest to Potty-Train and Why! Bichon Frise. Yorkshire Terrier. Jack Russell Terrier. West Highland White Terrier. Chihuahua. Cocker Spaniel. Havanese. Siberian Husky.