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.
A humidifier can help the dog breathe easier and thus reduce coughing and further throat inflammation. Kennel cough in puppies and toy breeds can be another story; the throat irritation can be accompanied by thick secretions that can cause pneumonia. Bordatella vaccine protects dogs from several strains of kennel cough.