The most common form of pet identification is dog tags attached to a pet collar.
Pet collars should be made of durable leather or woven nylon that won't break easily. Cats should be outfitted with an elasticized collar so that they will not choke if the collar catches on a tree or ledge when they are climbing. Pet collars should fit tightly enough so that pets can't struggle out of them, but loosely enough to be comfortable. When fitting your pet's collar ensure that two of your fingers are able to slip under the collar.
Engraved metal pet tags or plastic pet tags can be purchased easily over the Internet. Most pet id tags are attached to collars with a ring hook or an 's' hook, however, if you are worried that the identification tag might fall or break-off you can have the pet tag riveted right onto the pet collar for added security.
Personalized pet tags usually have between 3 and 6 lines available for your pet's information. Pet tags should include an active telephone number where you can be reached daily or at least be a telephone number that you check on a daily basis. It is optional whether you want to include your pet's name, your name, a second telephone number and your address on the dog tags.
In addition to a dog tag your pet's collar should also have rabies tags attached. Most veterinarians issue rabies tags with their name and telephone number. Medical tags shouldn't be your pet's primary form of identification, rabies registration numbers can be traced easily by vets and so they provide a good back-up to your pet's identification tags.
Pet identification tags usually cost between $3 and $10 online. Click on the links above for some top-selling pet tag suppliers.