A Pup Tail is the tail worn by a Pup, attached to a belt, harness or plug depending on the wearer's preference. Tails vary in size, material and expression, and often carry personal or Pack significance.

Pup Tails developed as part of the Puppy Gear tradition, with a wide range of makers offering designs.

As with all attached gear, comfort and safety of attachment are important. Communities differ in their preferred methods.