Bonnie is our beautiful ruby girl and the second Cavalier to join our family. Originally brought home simply as a companion for Minnie, she quickly became the dog who inspired us to explore responsible, health‑led breeding and to build the foundations of Minvalonnie.

She has a wonderfully calm, soft nature, yet she is confident enough to stand her ground when needed. Bonnie plays with enthusiasm, has a joyful, slightly wild streak when she’s excited, and absolutely loves cuddles. Her temperament is steady, affectionate and deeply people‑focused — she is an easy dog to live with and a constant source of comfort.

Bonnie lives as a cherished family dog and is part of every aspect of daily life. She enjoys routine, closeness and gentle interaction, and she brings a warm, intuitive presence to our home.

Bonnie’s Role in Our Programme

Bonnie represents everything we value in a Cavalier:

• A calm, affectionate temperament

• Emotional sensitivity

• A naturally people‑focused nature

• Gentle confidence

• A stable, family‑friendly disposition

She is fully health tested in line with — and often exceeding — current breed recommendations. Her results guide responsible pairing decisions and reflect our commitment to ethical, health‑led, temperament‑focused breeding.

Health Testing Overview

Kennel Club Name: Muzzawood Missy Melon

KC Registration Number: BB24479704

Colour: Ruby

Date of Birth: 11th March 2024

COI: 8.2%

Bonnie has completed all relevant health testing for the Cavalier King Charles Spaniel.

Her results are summarised below and explained in detail in the following section.

Health Testing Results

DNA Testing (LABOKLIN)

• Dry Eye / Curly Coat Syndrome (DE/CC): Clear  

• Episodic Falling Syndrome (EFS): Clear  

• Macrothrombocytopenia (MTC‑D): Clear  

• MCAD Deficiency (MCADD): Clear  

• MMVD (NEBL gene): Genetically Affected (MMVD/MMVD)  

• Full Kennel Club DNA Profile: Completed

Hips (BVA/KC)

Total Score: 14

• Right: 7

• Left: 7

Elbows (BVA/KC)

0/0 — Best possible result

Patella (Luxation Assessment)

• Right Patella: Normal / Clear

• Left Patella: Grade 1, only when significantly manipulated; immediately returned to position

Notes:  

• No clinical signs

• No instability during normal movement

• Considered acceptable for breeding when paired responsibly

MRI (CM/SM)

Scan Date: 23/04/2026

Official Results: CM2 / SM1c  

Notes:  

• SM1c is an age‑related central canal dilation, not a syrinx

• No syrinx formation

• No clinical symptoms

• Suitable for breeding with a carefully selected SM0 stud

Eyes (ECVO)

Appointment Date: 20/05/2026

Results: Genetically Unaffected / Clear

Heart (Cardiology)

Appointment Date: 20/05/2026

Official Results:  

• No murmur detected  

• Tiny mitral valve prolapse only  

• Amber colour‑graded result  

• No clinical signs

• Annual monitoring recommended (standard for the breed)

Health Testing Explained

DNA Tests

Dry Eye / Curly Coat Syndrome (DE/CC)

A severe inherited condition affecting the skin and eyes.

Bonnie: Clear.

Episodic Falling Syndrome (EFS)

A neurological condition causing exercise‑induced collapse.

Bonnie: Clear.

Macrothrombocytopenia (MTC‑D)

A benign blood trait that can be misinterpreted as illness.

Bonnie: Clear.

MCAD Deficiency (MCADD)

A metabolic condition affecting energy processing.

Bonnie: Clear.

Myxomatous Mitral Valve Disease (MMVD – NEBL gene)

Bonnie is genetically affected (MMVD/MMVD) for the NEBL variant.

What this means:  

• This is not a diagnosis  

• It indicates genetic predisposition only  

• Her actual heart health is determined by cardiology exams

• Many Cavaliers with this genotype never develop early MMVD

How this affects sire selection:  

• Sire must be NEBL Clear  

• Sire must be cardiologist‑clear  

• Sire must come from strong heart lines  

• Pedigree must show low early‑onset MMVD incidence

Orthopaedic Tests

Hips (BVA/KC)

Bonnie’s score of 14 places her around the breed median.

Why we test: To reduce the risk of joint issues and support long‑term structural soundness.

Elbows (BVA/KC)

A score of 0/0 is the best possible result.

Why we test: To ensure healthy elbow development and reduce the risk of inherited joint disease.

Patella (Luxation Assessment)

Bonnie’s patella results show:

• Right patella: Normal

• Left patella: Grade 1 only when forcefully manipulated, immediately returning to place

Why we test:  

Patella stability is important for long‑term mobility and comfort.

A Grade 1 patella with no clinical signs is considered low‑risk, especially when:

• The dog is structurally sound

• The luxation is mild and positional

• The opposite patella is normal

• The dog shows no symptoms

Breeding guidance:  

Bonnie must be paired with a stud who has:

• Clear / Normal patellae  

• Strong structural soundness

• No history of patella issues in close relatives

Neurological Testing

MRI (CM/SM)

Bonnie’s MRI shows:

• CM2 — extremely common in Cavaliers

• SM1c — a mild, age‑related central canal dilation

This is not a diagnosis of Syringomyelia.

It is a grading used to guide responsible breeding.

Realistic sire selection guidance:  

Because almost all Cavaliers are CM2, the focus is on SM status, not CM.

Bonnie must be paired with a stud who is:

• SM0 (clear)  

• MRI‑scanned under the BVA/KC scheme

• From low‑risk neurological lines

• With no family history of early‑onset SM

This pairing strategy significantly reduces the risk of SM in offspring.

Eyes (ECVO)

Annual ophthalmology screening.

Bonnie: Clear.

Heart (Cardiology)

Annual specialist examination.

Bonnie:  

• No murmur  

• Tiny mitral valve prolapse only  

• Amber grading (monitoring recommended, not a clinical concern)

This does not restrict breeding, provided the stud is:

• Cardiologist‑clear

• From strong heart lines

• With low incidence of early‑onset MMVD in pedigree

How We Share Health Results

We believe in full transparency while protecting sensitive data such as microchip numbers and registration details.

Copies of Bonnie’s official certificates are:

• Available to view at puppy viewings

• Included in your puppy pack

• Discussed openly during the matching and education process

For security reasons, we do not send full certificates electronically before viewings.

Prospective owners are always welcome to ask questions or request explanations about any aspect of Bonnie’s health testing.