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.
Test the citrus spray first on sensitive plants and fabrics that could be discolored. Capsaicin, the chemical that puts the spice in chili peppers, is irritating to a dog's sensitive nose. Because of this, most dogs will avoid anything that smells like a chili pepper. You can rub or sprinkle cayenne powder and dried chili powder directly on objects and areas where dogs are unwanted.