First of all, the Egyptians started the dog as man's best friend. A great helper and protecter of their master. If a human has a strong relationship with a dog, the dog would sacrifice to protect them, as if a mother and child.
Moving along, dogs are a skilled worker. In many cases, dogs will retrieve things. To a shot down duck or a baby trapped. They will listen to their master for instructions and and do a certain task. Many dogs are used to herd sheep or farm animals.
They want to kill the black guy ( it’s been a long time since I read but if my memories serves me right)
I would say I will definitely check reliability and safety.
the meaning is obvious enough: when people die, the bad things they did often stick in people’s memories, while their good deeds are forgotten. As Antony goes on to say, ‘So let it be with Caesar’.