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Dog Glossary – O

Glossary of Dog Terms:


Obedience Trial: An event held under AKC rules at which a leg toward an obedience degree can be earned.

Obesity: The condition of being obese; increased body weight caused by excessive accumulation of fat.

Oblique Shoulders: Shoulders well laid back.

Obliquely Placed Eyes: Eyes with outer corners higher than their inner ones.

Occipital Protuberance: A prominently raised occiput characteristic of some sporting and hound breeds.

Occiput: Dorsal, posterior point of the skull.

Odd-Eyed: Eyes of different color, such as one brown eye and one blue eye.

Old English Sheepdog: An English breed of sturdy dog having a docked tail and a thick, shaggy, bluish-gray and white coat with fur that hangs over the eyes.

Omnivore: A person or animal that feeds on both animal and vegetable substances

On-Dog Identification: A system of tagging, tattooing, or microchipping used to uniquely identify a dog.

Ophthalmic: Of or relating to the eye; ocular.

Orange Belton: See Belton. Color definitions may vary by breed. Always check the breed standard for the definitive color description.

Orthopedic Foundation for Animals (OFA): Organization, established in 1966, that developed and maintains a registry of hip dysplasia in dogs. Dogs with OFA numbers are rated and certified free of canine hip dysplasia. This rating applies for the life of the dog. In order to have OFA on AKC records, a dog must have permanent ID.

Otter Tail: Thick at the root, round, and tapering, with the hair parted or divided at the underside.

Out At The Elbows: Elbows turning out from the body as opposed to being held close.

Out At The Shoulders: With shoulder blades loosely attached to the body, leaving the shoulders jutting out in relief and increasing the breadth of the front.

Outcrossing: The mating of unrelated individuals of the same breed.

Oval Chest: Chest deeper than wide.

Oval Eye: As seen in Poodles, an eye with an egg shape.

Ovaries: The usually paired female or hermaphroditic reproductive organ that produces ova and, in vertebrates, estrogen and progesterone.

Overage Dam: A dam over 12 years of age on the date of mating.

Overage Sire: A sire over 12 years of age on the date of mating.

Overhang: A heavy or pronounced brow.

Overreaching: Fault in the trot caused by more angulation and drive from behind than in front so that the rear feet are forced to step to one side of the forefeet to avoid interfering or clipping.

Overshot: The incisors of the upper jaw projecting beyond the incisors of the lower jaw, thus resulting in a space between the respective inner and outer surfaces.

Ovulate: To produce ova; discharge eggs from the ovary.