Are dog collars ethical?

Whether dog collars are ethical or not is a controversial topic involving many considerations such as animal rights, welfare, and the relationship between humans and animals. Here are the different views:
Support the argument for the morality of dog collars
Ensure safety and welfare: the dog collar can be used to connect the leash, limit the dog's activity range when going out, prevent them from running to the road and being hit by vehicles, or entering dangerous areas such as rivers, construction sites, etc., so as to protect the safety of the dog's life. In addition, the collar can be hung on the identification plate, when the dog is accidentally lost, can help people quickly contact the owner, increase the chance of the dog to return home safely, which is fundamentally conducive to the survival and welfare of the dog, in line with the principle of moral protection of animals.
Aid training and management: Collars can be used as an aid in the process of training your dog. For example, when the dog has bad behavior, the owner can give the appropriate correction signal through the collar to help the dog establish a good code of behavior, so that the dog can better integrate into human society and live in harmony with humans. This is not only conducive to the development of the dog itself, but also reduces the trouble caused by the dog's behavior problems to others, which has a certain moral rationality from the social level.
It is a common social phenomenon that humans keep pet dogs, and in this relationship, humans bear the responsibility of caring for and managing dogs. The use of dog collars is a way for humans to manage and care for dogs, which reflects the necessary measures taken by humans to achieve a better life for both parties when they get along with animals, and is a reasonable behavior under this special relationship, without violating the basic moral code.
Arguments against the morality of dog collars
May cause physical harm: If the dog collar size is not suitable, poor material or improper use, it may cause harm to the dog's body, such as too tight collar will cause the dog breathing difficulties, neck skin wear, and may even affect the development of the cervical spine. Collars with sharp parts or poor quality can also scratch dogs, which are against the ethical requirements of animal welfare and are considered unethical.
Restriction of freedom and psychological pressure: from the perspective of animal rights, dog collars restrict the free activities of dogs to a certain extent, so that dogs can not fully act according to their instincts and wishes. Especially when the dog wears the collar for a long time, or is forced to wear it when it is not required to be restrained, it may bring psychological stress and anxiety to the dog, which is considered to be a violation of the dog's rights and is not in line with the moral concept of respecting animal freedom.
Can be used for unethical purposes: In some cases, dog collars can be abused by owners, such as for excessive punishment or inhumane training. Some owners may hurt their dogs by pulling heavily on the collar in order to achieve the purpose of getting the dog to obey, which is clearly immoral, and makes the dog collar a tool for immoral behavior.