A Thestral is a breed of winged horses with a skeletal body, face with reptilian features, and wide, leathery wings that resemble a bat's. They are very rare, and are considered dangerous by the Ministry of Magic.
A dog collar is a piece of material put around the neck of a dog. A collar may be used for control, identification, fashion, or other purposes. Identification tags and medical information are often placed on dog collars. Collars are also useful for controlling a dog manually, as they provide a handle for grabbing.
The Martingale collar is made with high strength nylon webbing then covered with a double layer of fleece that will rest on the dogs neck along with colorful ribbon on top. The limited slip part of the collar is braided half the thickness of the leash to provide a smooth release and increase in tension.