If we look at the new modern Bedlington terrier, he looks very innocent. No one can imagine that he was used in dog fights. It's all about how you train the dog. We have examples of many other dogs like a blue nose pitbull, even he was used in dog fights, he even competed in wars. Now many people says that he is not like that. Many experts say its all about how you train your dog. Even the badass dog like pitbull can behave well if trained well. I believe the appearance of Bedlington is changed because breeders may have tried to interbreed with different parent dog.
