The cephalic index or cranial index, the ratio of the maximum width of the head of an organism multiplied by 100 and then divided by their maximum length. The index was once used to categorize human beings in the first half of the 20th century, but today it is used to categorize dogs and cats.
The Exotic Shorthair is a breed of cat developed as a short-haired version of the Persian. The Exotic is similar to the Persian in many ways, including temperament and conformation, a flat nose and face with the exceptions of the short dense coat. The Exotic breed generally live to 12-15 years of age. The second longest living Exotic Shorthair known was from Melbourne, Australia and lived to 17 years 1 month. Thus far, the longest living Exotic Shorthair currently lives in Portland, Oregon. Her birthday is June 1, 2004.
Brachycephaly is the shape of a skull shorter than typical for its species. It is perceived as a desirable trait in some domesticated dog and cat breeds, notably the pug and Persian, and can be normal or abnormal in other animal species. In humans, the cephalic disorder is known as flat head syndrome, and results from premature fusion of the coronal sutures, or from external deformation. The coronal suture is the fibrous joint that unites the frontal bone with the two parietal bones of the skull. The parietal bones form the top and sides of the skull. This feature can be seen in Down syndrome. Brachycephaly also occur non-pathologically as a result of normal variation between human populations.
The Bullmastiff is an English breed of dog of mastiff type and large size, with a solid build and a short muzzle. It was developed as a guard dog in the nineteenth century by cross-breeding the English Mastiff with the now-extinct Old English Bulldog. It was recognised as a breed by The Kennel Club in 1924.
The Bulldog is a British breed of dog of mastiff type. It may also be known as the English Bulldog or British Bulldog. It is a medium-sized, muscular dog of around 40–55 lb (18–25 kg). They have large heads with thick folds of skin around the face and shoulders, and a relatively flat face with a protruding lower jaw. The breed has significant health issues as a consequence of breeding for its distinctive appearance, including brachycephalia, hip dysplasia, heat sensitivity, and skin infections. Due to concerns about their quality of life, breeding Bulldogs is illegal in Norway and the Netherlands.
The French Bulldog, French: Bouledogue Français, is a French breed of companion dog or toy dog. It appeared in Paris in the mid-nineteenth century, apparently the result of cross-breeding of Toy Bulldogs imported from England and local Parisian ratters.
Cherry eye is a disorder of the nictitating membrane (NM), also called the third eyelid, present in the eyes of dogs and cats. Cherry eye is most often seen in young dogs under the age of two. Common misnomers include adenitis, hyperplasia, adenoma of the gland of the third eyelid; however, cherry eye is not caused by hyperplasia, neoplasia, or primary inflammation. In many species, the third eyelid plays an essential role in vision by supplying oxygen and nutrients to the eye via tear production. Normally, the gland can turn inside-out without detachment. Cherry eye results from a defect in the retinaculum which is responsible for anchoring the gland to the periorbita. This defect causes the gland to prolapse and protrude from the eye as a red fleshy mass. Problems arise as sensitive tissue dries out and is subjected to external trauma Exposure of the tissue often results in secondary inflammation, swelling, or infection. If left untreated, this condition can lead to dry eye syndrome and other complications.
A luxating patella, sometimes called a trick knee, is a condition in which the patella, or kneecap, dislocates or moves out of its normal location. It can be associated with damage to the anterior cruciate ligament.
Entropion is a medical condition in which the eyelid folds inward. It is very uncomfortable, as the eyelashes continuously rub against the cornea causing irritation. Entropion is usually caused by genetic factors. This is different from when an extra fold of skin on the lower eyelid causes lashes to turn in towards the eye (epiblepharon). In epiblepharons, the eyelid margin itself is in the correct position, but the extra fold of skin causes the lashes to be misdirected. Entropion can also create secondary pain of the eye. The upper or lower eyelid can be involved, and one or both eyes may be affected. When entropion occurs in both eyes, this is known as "bilateral entropion". Repeated cases of trachoma infection may cause scarring of the inner eyelid, which may cause entropion. In human cases, this condition is most common to people over 60 years of age.
Laryngeal paralysis in animals is a condition in which the nerves and muscles that control the movements of one or both arytenoid cartilages of the larynx cease to function, and instead of opening during aspiration and closing during swallowing, the arytenoids remain stationary in a somewhat neutral position. Specifically, the muscle that causes abduction of the arytenoid cartilage, the cricoarytenoideus dorsalis muscle, ceases to function. This leads to inadequate ventilation during exercise and during thermoregulatory panting as well as incomplete protection of the airway during swallowing.
Veterinary surgery is surgery performed on animals by veterinarians, whereby the procedures fall into three broad categories: orthopaedics, soft tissue surgery, and neurosurgery. Advanced surgical procedures such as joint replacement, fracture repair, stabilization of cranial cruciate ligament deficiency, oncologic (cancer) surgery, herniated disc treatment, complicated gastrointestinal or urogenital procedures, kidney transplant, skin grafts, complicated wound management, and minimally invasive procedures are performed by veterinary surgeons. Most general practice veterinarians perform routine surgeries such as neuters and minor mass excisions; some also perform additional procedures.
Bladder stones or uroliths are a common occurrence in animals, especially in domestic animals such as dogs and cats. Occurrence in other species, including tortoises, has been reported as well. The stones form in the urinary bladder in varying size and numbers secondary to infection, dietary influences, and genetics. Stones can form in any part of the urinary tract in dogs and cats, but unlike in humans, stones of the kidney are less common and do not often cause significant disease, although they can contribute to pyelonephritis and chronic kidney disease. Types of stones include struvite, calcium oxalate, urate, cystine, calcium phosphate, and silicate. Struvite and calcium oxalate stones are by far the most common. Bladder stones are not the same as bladder crystals but if the crystals coalesce unchecked in the bladder they can become stones.
The Pug is a breed of dog originally from China, with physically distinctive features of a wrinkly, short-muzzled face, and curled tail. The breed has a fine, glossy coat that comes in a variety of colors, most often fawn or black, and a compact, square body with well developed and thick muscles all over the body.
Canine glaucoma refers to a group of diseases in dogs that affect the optic nerve and involve a loss of retinal ganglion cells in a characteristic pattern. An intraocular pressure greater than 22 mmHg (2.9 kPa) is a significant risk factor for the development of glaucoma. Untreated glaucoma in dogs leads to permanent damage of the optic nerve and resultant visual field loss, which can progress to blindness.
The laryngeal saccules are soft tissue masses that are extensions of the laryngeal ventricles in the larynx. Their function is not well understood, but they may lubricate the vocal cords, and increase the resonance of vocalisation. They may be involved in airway disease and airway obstruction. They may be surgically removed using a laryngeal sacculectomy.
Pedigree Dogs Exposed: Three Years On is a 2012 follow-up to the 2008 BBC One documentary, Pedigree Dogs Exposed (PDE). While this second programme looks at the positive changes made since the original film, it focuses on investigating areas of continuing concern. The programme concluded that it was time to call a halt to suffering created by breeders. It states that as long as the Kennel Club (KC) tolerated human whim leading to dogs that cannot run, breathe, or see freely, dogs would continue to suffer, but featured that, in fact, the Kennel Club would continue in the vein, suggesting that the organisation has a conflict of interest in juggling its commitments to breeders and to dogs – when the interest of dogs does not match up with that of breeders, the dogs suffer. It also called on dog fanciers to stop being consumers of 'freak-show" appearance, the driving factor in developing dogs to physical extremes. KC refused to participate in the production. The programme aired on 27 February 2012 in the United Kingdom.
Brachycephalic airway obstructive syndrome (BAOS) is a pathological condition affecting short nosed dogs and cats which can lead to severe respiratory distress. There are four different anatomical abnormalities that contribute to the disease, all of which occur more commonly in brachycephalic breeds: an elongated soft palate, stenotic nares, a hypoplastic trachea, and everted laryngeal saccules. Because all of these components make it more difficult to breathe in situations of exercise, stress, or heat, an animal with these abnormalities may be unable to take deep or fast enough breaths to blow off carbon dioxide. This leads to distress and further increases respiratory rate and heart rate, creating a vicious cycle that can quickly lead to a life-threatening situation.
Alarplasty is a plastic surgery procedure in which a wedge of the wing of the nose is removed in order to alter the shape of the nostrils. Alarplasty may be used to increase or decrease the width of the nostrils, for either cosmetic or functional reasons. In humans it may also make the nose perceptibly narrower.
An elongated soft palate is a congenital hereditary disorder that negatively affect dogs and cats' breathing and eating. A soft palate is considered elongated when it extends past the top of the epiglottis and/or past the middle of the tonsillar crypts. The soft palate is made up of muscle and connective tissue located in the posterior portion on the roof of the mouth. The soft palate creates a barrier between the mouth and nose. This continuation between the cavities makes it possible to chew and breathe at the same time. The soft palate only blocks the nasal cavity while swallowing. At rest the soft palate should only stretch caudally from the hard palate to the tip of the epiglottis leaving an opening between the nasal and oral cavities. When the soft palate is elongated, it partially blocks the throat thereby creating breathing and feeding-related issues. The elongation and other accompanying symptoms occur in breeds characterized with “smooshed faces” such as pugs, bulldogs, and Persian cats. This condition is a congenital, meaning it is present when the animal is born. The “smooshed” characteristics is the result of a genetic mutation. The animal’s genetic code causes the bones in their skull to grow to a smaller size. Because the bones are smaller, muscles and other tissues that surround the bones of the skull are out of proportion. These animals are often referred to as brachycephalic, derived from the Greek words for “short” and “head”. An elongated soft palate is a symptom of Brachycephalic Obstructive Airway Syndrome (BOAS) and is common in brachycephalic dog breeds and has been reported in brachycephalic cat breeds as well. Some of the other BOAS related symptoms include stenotic nares, everted laryngeal saccules, and laryngeal collapse.
