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 SerestoÂ® Flea & Tick Collar is for small dogs and features a 15-inch, easy-to-use, no-hassle, waterproof collar size. It can be used by puppies seven weeks and older, weighing up to 18 lb. It kills deer ticks, American ticks, brown ticks, and Lone Star ticks, as well as chewing lice.