A pet's ID tag is called a dog tag for a number of reasons:
- History 4: The term "dog tag" originated in the military. During the American Civil War, soldiers made private placards with their names and ranks to wear around their necks in order to be identified in the event of casualties. In 1916, the United States Navy officially used it for troops and became a dog tag, at that time soldiers had two dog tags, one was buried with the soldier when killed, and one was brought back for registration or given to the family. Because this kind of tag is similar to the tag used to identify dogs and other pets, it was originally called "dog tag", and later pet ID tags also used this name.
- Appearance Similarity: Pet ID tags and military dog tags share similarities in appearance and wear. It is usually a small brand, a variety of materials, such as metal, plastic, etc., which can be fixed on the pet's collar through a rope, chain or buckle, and hung on the pet's neck, just like the army dog tag hanging on the soldier's neck, from the appearance and wearing position look very similar, so people also call the pet's identity tag dog tag.
- Similar functions: The main function of the army dog tag is to identify soldiers in war and other scenarios, and record important information such as soldiers' names, blood types, and troops. The pet's identity tag is also used to identify the pet's identity, which is generally engraved with the pet's name, the owner's contact information, etc., to facilitate others to contact the owner in the case of a lost pet and help the pet return to the owner, the two have similarities in function, so the pet's identity tag is also called a dog tag.
- Convention: With the passage of time and the development of pet culture, people are more and more accustomed to the pet's identity tag called dog tag, this title is gradually widely accepted and used, has become a conventional name, whether it is pet owners, pet supplies business, or related pet service agencies, are generally used "dog tag" to refer to the pet's identity tag.





