Dogs are the most loyal friends of mankind, and there are many touching stories about dogs, such as the tear-jerking "Hachiko loyal dog" and the space dog Laika who explores space.
There are also controversial "The King of Dogs" and "The Old Man and the Dog".
The "dog star" in "The Old Man and the Dog" even led to a major criminal case.

Cheng Peng, born in 1962 in Yinchuan, Ningxia, a very rich family, because he is a single line of the Cheng family, cheng Peng has been loved by his parents since he was born, but under the pampering of his parents, Cheng Peng has developed a good and bad character, he not only does not love to read, but also often fights and steals, becoming a local thorn.
Cheng Peng also became a regular customer of the police station, because of his young age, he could only criticize education, but Cheng Peng never had a remorseful heart, continued to do the business of stealing chickens and dogs, at the age of 20, he was imprisoned for two years for theft, and after he was released from prison, his father went around to find a stable job for him, but it did not take long for Cheng Peng to be dismissed.
At the age of 26, his parents introduced him to an object, Cheng Peng was willing to get married but there was a condition, he wanted to move out to live, the parents felt that their son was married, and he could receive his heart when he had a home, so he agreed. Cheng Peng moved to the most remote corner of the village.
Cheng Peng got married, but his nature is difficult to change, he also punched and kicked his wife, his wife couldn't bear to run away from home, lived in the forest farm where he worked in the southern mountains, and returned home once or twice a year, Cheng Peng didn't care at all, he traveled around, and he raised a lot of dogs at home.
These large dogs were extremely wary of strangers, and once someone approached, they would bark wildly, plus Cheng Peng was not welcome in the village, and few people interacted with him.
In 1988, the 26-year-old Cheng Peng went out of a long way, rushed back to Yinchuan, met Zhao Mou on the train not long after graduation, Cheng Peng can speak the Tao, also said that he is a high-ranking cadre, can help her arrange work, Zhao Mou listened to the heart, followed him to get off the car quickly.
Cheng Peng took Zhao to go shopping, go to the restaurant, buy new clothes, the shot is very generous, Zhao mou is also convinced of his identity, Cheng Peng took her home again, the two warmly saved for a few days, in these days Zhao asked him when to arrange work, Cheng Peng was just to abduct her, did not expect her to take it seriously.
Cheng Peng had to say that it would be arranged in a few days, Cheng Peng shirked a bit, and his heart was more and more bored with Zhao, and he wanted to completely get rid of Zhao.
However, Cheng Peng did not choose to break up, but beat her to death with iron tongs while she was asleep, but how to deal with the body? Cheng Peng looked at the dogs in the courtyard and had a plan, he dismembered And fed Zhao's body to these dogs, as for the bones, he buried them in the backyard.
This is the first crime cheng peng committed, but it is not the last.
Cheng Peng's boldness was getting bigger and bigger, he felt that he had killed people anyway, sooner or later they would all die, and simply do a big ticket; Cheng Peng started a robbery, specializing in robbing some taxi drivers, and the cars were sold at a low price by him, and Cheng Peng frantically squandered the money obtained from the robbery.
And he will always be surrounded by some women, Cheng Peng maintains an improper relationship with two women, one is an accountant, and the other has a family.
The female accountant has always wanted to marry Cheng Peng, but Cheng Peng already has a wife, and if he marries, it will definitely be exposed, and Cheng Peng kills her in order to get rid of this woman's entanglement.
Liu Mou, a woman with a family, is the person he has maintained an improper relationship for the longest time, but Liu told Cheng Peng that he was pregnant and wanted to break off relations with him, and Cheng Peng was angry.
From 1988 to 1995, Cheng Peng killed three lovers, two drivers, and a junior high school classmate, all of whom were dismembered by Cheng Peng and fed to dogs.
Dramatically, two years before Cheng Peng was arrested, that is, in 1993, Xie Jin, the director of "The Old Man and the Dog", came to Ningxia Town North Fort to shoot a movie, the actors have been selected, at that time there was a dog with a spirit, but the dogs found by the crew were not in line with the director's wishes.
The director heard from the locals that Cheng Peng had a lot of dogs and could go and see.
The director found Cheng Peng, before entering the house he heard a room full of dogs barking; one of the dogs stared at him, as if watching the prey, the director took a look at the dog, the director borrowed the dog with Cheng Peng, in order to let the dog cooperate with the performance, Cheng Peng stayed in the crew for a while, and even acted as a stand-in.
There was an episode during filming, the old man fed the dog with rice, originally intended to be a psychic dog who did not want to eat the practice meal, but as soon as the meal was put up, the dog actually threw up, which was very strange, but Cheng Peng knew why, because this dog grew up eating corpses and never ate normal meals.
At that time, everyone's mind was on filming, and no one doubted anything, and the crew did not find the true face of Cheng Peng and the dog, but they just felt that this person was quite capable of talking, often talking to the women of the crew, but the crew left after filming, and nothing big happened. With the arrest of Cheng Peng, this film once became a "forbidden film".
Cheng Peng was convicted of intentional homicide and robbery.
According to Article 232 of the Criminal Law of the People's Republic of China, whoever intentionally kills people shall be sentenced to death, life imprisonment or fixed-term imprisonment of not less than 10 years;
The crime of intentional homicide is an extremely bad crime, and only a few cases with relatively minor circumstances, such as Cheng Peng's intentional homicide, dismemberment, and the death of many people, are extremely bad, the social impact is extremely great, the subjective malice is deep, and the death penalty is imposed on intentional homicide, robbery, and several crimes.