The leashes are pet leashes! The pet leash feature allows you to add your pet's headshot to the forums under your user information and Gold Account users can use one without any extra charge. You can choose which pets will be active on the Pet Leash page.

Along with the headshot, you can also write a short description that will show up under your pet leash. There's more information the page, and make sure to check out the page for information!