The owners of an American Bully are challenging the authorities’ classification of “fighting dogs” after their pet, a breed strictly controlled in Hong Kong, died during neutering, a procedure they undertook amid a crackdown on non-compliance. Monchiu, a female, died under anaesthesia during the operation at a veterinary clinic on Friday, her owners said on social media late on Saturday. They said the dog, who suffered from vision and hearing impairment, as well as skin problems, was unfit for...