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.
This type of dog collar should be used with extreme caution and never be left on your dog when you are not around. Chain slip collars have a high potential for strangulation. Metal prong or pinch collars. Metal prong collars can be intimidating and harsh to look at, but trainers generally prefer this to the chain slip collars. This is the collar of choice for training dogs that are stubborn and strong. Metal prong collars are also called pinch collars, and are widely used for training like the chain slip collars.