The short answer
Have a Cavalier’s heart listened to at every checkup and follow up any murmur with an echocardiogram. Count resting breathing rate at home once a murmur is found. Watch for signs of neck or head pain such as yelping, scratching at the neck without touching it, or avoiding being touched. Brush the teeth, keep the dog lean, and price pet insurance in your first week.
Mitral valve disease
Mitral valve disease is a slow leaking of the valve on the left side of the heart. VCA Animal Hospitals names the Cavalier first among the breeds affected. The first sign is a murmur your vet hears.
A murmur is the start of monitoring, not a crisis. An echocardiogram stages the disease, and your vet may recommend treatment before any signs appear at certain stages. At home, count your dog’s breathing rate while it sleeps; a rising resting rate, a cough, tiring easily or fainting are reasons to call your vet promptly.
Browse adoptable Cavaliers
Ask the rescue whether a murmur or any scratching or yelping has been noted, and bring that to your first vet visit.
See Available Cavaliers →Chiari-like malformation and syringomyelia
Cavaliers are prone to a skull that is too small for the back of the brain (Chiari-like malformation), which can obstruct the flow of spinal fluid and lead to fluid-filled cavities in the spinal cord (syringomyelia). In a study of 130 affected Cavaliers, the most common signs were vocalising or yelping, spinal pain, reduced activity, reluctance on stairs or to jump, avoiding touch and disturbed sleep.
The classic “phantom scratching”, where the dog scratches at the air near its neck without touching it, appeared only in dogs with larger cavities. Signs can be subtle and mistaken for behaviour, so describe them to your vet. MRI is the definitive test, and many dogs are made comfortable with medication your vet or a veterinary neurologist prescribes.
Episodic falling
Episodic falling is an inherited movement disorder in which a Cavalier’s muscles stiffen during exercise or excitement, so the dog may fall or move awkwardly while staying fully conscious. The Merck Veterinary Manual links it to a mutation in the BCAN gene, and a DNA test exists. Any collapse should be reported to your vet, since heart and seizure problems need to be ruled out.
Eyes and teeth
Progressive retinal atrophy, a painless inherited loss of vision that starts with poor night vision, is a condition VCA lists for Cavaliers. A cloudy eye or a dog that hesitates in dim light deserves an eye exam.
Small breeds are more prone to dental disease, according to VCA. Daily brushing and regular dental care matter even more in a heart-disease breed, so ask your vet how anaesthesia will be managed for a dog with a murmur.
The first vet visit after adoption
Ask for a careful heart listen and an echocardiogram referral if there is a murmur, a neurological history (describe any scratching, yelping or touch sensitivity), an eye check, a dental exam, a body condition score and baseline bloodwork. Bring the rescue’s records.
Price pet insurance the same week. Every Canadian provider excludes conditions documented before enrolment, and in Cavaliers a murmur can be found early, so enrolling before that first exam matters.
Frequently asked questions
What are the most common Cavalier King Charles Spaniel health issues?
Mitral valve heart disease, Chiari-like malformation and syringomyelia, episodic falling, progressive retinal atrophy and dental disease.
My Cavalier has a heart murmur. What now?
Ask for an echocardiogram to stage it. Many dogs live well for years with a murmur, and your vet may recommend treatment at certain stages before signs appear. Count resting breathing at home and report any increase, cough or fainting.
Why does my Cavalier scratch at the air near its neck?
That “phantom scratching” can be a sign of syringomyelia, especially when the cavity in the spinal cord is large. Describe it to your vet, along with any yelping or sensitivity to touch.
What is episodic falling in Cavaliers?
An inherited condition in which muscles stiffen during excitement or exercise, causing the dog to fall while staying conscious. A DNA test exists, and your vet will rule out heart and seizure causes for any collapse.
How long do Cavaliers live?
Many live into their early teens. Heart disease is the main factor, so regular heart checks and early treatment when advised give the best outlook.
Should I get pet insurance for a rescue Cavalier?
Yes, it is worth pricing in your first week. Canadian pet insurance excludes conditions documented before enrolment, and heart disease is common and often found early in this breed.
Sources
- VCA Animal Hospitals: Mitral Valve Disease: Cavalier named; murmur as first sign; echocardiogram; staging
- Rusbridge et al., signs of Chiari-like malformation pain and syringomyelia in Cavaliers (Europe PMC): common signs; phantom scratching with larger syrinxes
- Merck Veterinary Manual: Congenital and Inherited Cerebral Disorders: episodic falling in Cavaliers linked to BCAN mutation
- VCA Animal Hospitals: Progressive Retinal Atrophy: Cavalier named
- VCA Animal Hospitals: Dental Disease in Dogs: small breeds more prone
General information, not veterinary advice. Diagnosis and treatment decisions belong with your veterinarian.
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