Cavalier King Charles Spaniel (part 2)

Patella luxation
Patella luxation is a condition that involves repetitive dislocation of the patella (knee cap). It is seen in all types of dog but is most common in toy and miniature breeds of dog, such as the Cavalier King Charles Spaniel. It is also thought to be more common in females than males. Symptoms include abnormal movement in the hind limbs, lameness, skipping, and an abnormal posture while sitting. Clinical symptoms can be seen in dogs as early as four moths old. It is usually diagnosed during a physical examination from a veterinarian and is then confirmed by an x-ray. It is thought that it can lead to ruptured cranial cruciate ligament in 15-20% of cases. Dogs with intermittent or permanent lameness will be considered for surgery but most cases will be treated with pain killers, physiotherapy, and/or weight management. 

Keratoconjunctivitis sicca (KCS)
KCS (also known as dry-eye syndrome) is a disease that affects the precorneal tear film and prevents the production of moisture in the eye. It results in the inflammation of the cornea and tissues in the eye due to dryness. It is thought to affect around 1% of dogs. The Cavalier King Charles Spaniel is one of the breeds more commonly affected, along with breeds such as pugs and the English bulldog. Symptoms include redness and yellow/green discharge. If untreated it will eventually result in a cloudy film over the cornea and scarring around the eye. It can cause blurred vision, or loss of vision completely and causes the eyes to be more prone to infection. It can be diagnosed by a schirmer tear test which checks whether there is adequate tear production in the eye. KCS can not be cured and requires life long medication. Two commonly used medicines are cyclosporine and tacrolimus which must be administered in the eyes once or twice a day, every day. 

Syringomyelia

Syringomyelia MRI
http://cavalierhealth.org/syringomyelia.htm

Chiari-like malformation (CM) is a condition seen in cavaliers causing their brain to be too big for their skull. The back part of their skull puts pressure on the brain and some of the brain is squeezed out the back of the skull (foramen magnum). This is known as syringomyelia when the skull partially blocks the flow of cerebrospinal fluid from the brain, which is pushed through the central spinal canal. This causes a variation in pressure and creates fluid-filled cavities within the spinal cord, known as syrinx.
It is thought that this produces a pins-and-needles feeling around the head, neck and spine, while in severe cases it is thought to cause a burning sensation. Symptoms include being sensitive to touch, walking/moving slowly, problems jumping, scratching, phantom scratching, biting hind legs, or weakness in limbs. The symptoms seem to be worse during exercise, when excited, at night, and can even worsen due to changes in weather. It is thought that this is because of the changes in atmospheric pressure. It can be diagnosed by an MRI scan but there is no cure. Some dogs may have surgery to remove the back parts of the skull which are putting pressure on the brain. This will result in an improvement in about 80% of dogs, but 50% of these will have symptoms recurring within 2 years. In the most severe cases the dog will have to be euthanised as the condition is so painful. It is most commonly found in cavaliers and other toy breeds such as pugs, chihuahuas and yorkshire terriers. Symptoms will usually be seen after 2 years of age and a study showed that about 70% of cavaliers will have syringomyelia by the age of seven. It is a progressive illness which means it will get worse with time. It may end up destroying parts of the spinal cord, and the dog's legs will become progressively weaker. Some medications may be given to help limit the pain and reduce symptoms. Dogs with syringomyelia prefer to have their head elevated so keeping food and water bowls raised can help make them more comfortable. 

Video of cavalier with syringomyelia: 
https://www.youtube.com/watch?v=_UGp45LMCis

Cavalier King Charles Spaniel (part 1)

Cavalier King Charles Spaniels are a small breed of spaniel, classed by the Kennel Club as a toy dog. They are a separate breed to the King Charles Spaniel, despite being very similar. They are defined by a few key features, primarily a more prominent snout. Cavaliers usually weigh 13-18 lbs and live for an average of 9-15 years.

Classic King Charles Spaniels

Spaniels were originally popular with royalty, particularly King Charles II (1660-1685) who wouldn't go anywhere without two or three of his spaniels, hence why they became known as the King Charles Spaniel. After he died the popularity of spaniels died down and flat faced dogs such as pugs became more popular. Breeders began mixing the breeds to produce flatter faced spaniels which kept the name King Charles Spaniel. In the 1920s an American name Roswell Eldridge came to England in search for the classic KCS, seen during the time of King Charles II. He offered £25 at the Crufts dog show as a reward for any breeder that could produce a spaniel that looked like the ones seen during the reign of King Charles II. It wasn't until five years later, one month after his death, that a breeder with the dog Ann's Son, was able to claim the money. This reestablished the interest in the classic looking spaniels. Eventually the long-nosed spaniels became more popular and were given the name Cavalier King Charles Spaniel to differentiate them from the flat-nosed King Charles Spaniel (known in America as the English toy spaniel). In 1945 the Kennel Club recognised it as a separate breed but it wasn't until 1995 that it was recognised as a separate breed by the American Kennel Club. 

Cavalier King Charles Spaniel

King Charles Spaniel today

Due to the amount of inbreeding that occurs in pedigree dogs, the Cavalier King Charles Spaniel has developed numerous health problems. 

Episodic Falling Syndrome (EFS)

EFS is a recessive, genetic condition that is unique to the cavalier breed and has never been diagnosed in any other dog breed. It prevents the muscles from being able to relax, normally instigated by excitement, exercise, or frustration. Symptoms vary for each dog but could include things such as freezing/stiffness, spasms, or being unable to react to stimuli. The dog will not lose consciousness. The condition can be improved with therapy and is very rarely life threatening. Most dogs will carry on without any reaction after a mild episode and will become used to the incidents over time. There is no official cure for EFS but a study carried out in 2002 showed cavaliers with EFS improved dramatically when given a drug called clonazepam. After being given the medication for two years they were described as being almost completely cured. However, it has been suggested that being given this drug for an extended period of time can result in tolerance of the drug, causing it to lose effectiveness. 

Hip dysplasia

Hip dysplasia is a degenerative disease which can develop in any dog breed. A degenerative disease is one which will get worse with age, however it can also be affected by weight and volume of exercise. Any dog may develop hip dysplasia, however, it is a partially inherited disorder as it is more likely to occur in dogs that have been bred from parents who also suffered from hip dysplasia. Puppies will not be born with the condition, it will develop as they age. About 10% of cavaliers are diagnosed by two years old. It can cause varying degrees of arthritis and is thought to affect 12-24% of cavaliers. However, some people believe that it may be higher than this as, once the dog reaches a certain age, it will probably be diagnosed as arthritis. It can only be diagnosed accurately with an x-ray. Once diagnosed, a dog will probably be given medication to limit the pain and help increase mobility. If this is not effective then surgery may be considered. 

Mitral Valve Disease (MVD)

MVD is thought to be the leading cause of death in cavalier spaniels. It is a poly-genetic disease which means it can be caused by more than one gene and the genes responsible for MVD have yet to be identified. It affects over half of the breed by the age of five and will be present in nearly every cavalier spaniel by the age of ten. It is about 20 times more common in CKCS than other breeds of dogs. MVD is a condition that causes the degeneration of the mitral valve in the heart. This valve usually prevents any back flow when blood is pumped through the heart. MVD results in the back-flow of blood, resulting in less blood being pumped round the body. This causes symptoms such as breathlessness, a distended abdomen, lack of appetite, restlessness, weight loss, and possibly fainting. All cavaliers should be screened for a heart murmur once a year from one year old. Eventually the mitral valve will deteriorate and collapse completely, inevitably resulting in death by chronic heart failure. 

Micro Pig Management

Over the past few years, micro/miniature animals have become increasingly popular - particularly the micro pig. Micro pigs are not a specific breed of pig but are in actual fact just potbellied pigs selectively bred to become smaller. At a first glance pigs seem to be great pets; they are intelligent, affectionate, adorable, and despite their reputation are actually quite hygienic animals. They can even be litter trained and taken for walks.

Legislation

However, before owning any breed of pig it is important to research the legal requirements. Even if they are kept as a pet, any breed of pig is considered livestock and therefore owners must obey specific laws for owning livestock. Firstly the owner will need to register the living area for the pig and will be given a CPH number. They will then need to register the arrival of the pig within 30 days. The pig must have an ID tag or tattoo to prove that is has been registered. To move the pig (including for walking) you must acquire a licence and a walking route will be agreed. After the pig has returned to its premises it (or any other pig on the property) must not be moved for 20 days.  

 
Micro pigs can not travel in a car, they must be placed in transportation specifically designed under the Welfare of Animals (Transport) Order 2006. This must be washed and disinfected after use to prevent the spread of diseases such as Swine Vesicular Disease and Foot and Mouth. If the pig becomes unwell a vet needs be called to the place of residence, pigs should not be taken into a veterinary surgery. 

Health Problems

Owners should be aware of the zoonotic diseases that can be transmitted between humans and pigs. This includes Erysipeloid and Streptococcus suis. The latter can result in meningitis and even deafness if not treated. Pigs are also prone to Salmonella infections such as Enterocolitis  which can be contracted from animal faeces and other pigs. Some micro pigs may be severely inbred to produce the smallest pigs as quickly and cheaply as possible. This can result in serious health problems, similar to pedigree dogs. 

It is good to keep in mind when getting a miniature pig that you can not guarantee how big it will grow. Some idea can be gained from looking at the parents but pigs can begin breeding several weeks after birth so the parents may not be fully grown. It is therefore important to only get one if you are sure you will be able to look after it no matter what size it becomes. They also prefer the company of at least one other pig and will need space to root, dig and wallow in wet mud. If not stimulated properly they will become destructive and even aggressive. This is not to say that pigs can not make great pets but they are lots or hard work and should not be bought purely based on their 'adorable' appeal.