Blocky - Square or cube-like formation of the head.
Tapetum Lucidum - The highly reflective portion of the interior of the canine eyeball that aids in night vision.
Ears - The auditory organ, consisting of three regions - inner ear, middle ear, and the most important pinna (or leather), which is supported by cartilage and which affects the expression of all breeds.
Bordetellosis - A bacterial infection affecting the respiratory system.
Prick Ear - Ear carried erect, usually pointed at the tip.
Chippendale Front - Forelegs out at the elbows, pasterns close, and feet turned out. Named after the Chippendale chair. Also called fiddle front.
Collie - A medium-to-large dog of a breed originating in Scotland as a sheepdog, having a long narrow muzzle and either a long thick straight coat or a short hard flat coat, depending on the variety.
Bad Mouth - Crooked teeth; when the mouth is closed, upper and lower teeth do not line up according to the standard of the breed.
Bandy Legs - Legs that bend outward.
Briard - An ancient French breed of sturdily built, rough-coated dogs.
Hook Tail - A tail that is carried down, but with the tip curled upwards.
Topline - The dog's outline from just behind the withers to the tail set.