Though our exciting initiative, the Australian Cavalier Heart and Longevity Project (ACHLP), we are investing in the future — our dogs, our time, and our collective expertise.

While we anticipate that this project may take up to a decade before its long-term impact can be fully measured, we are optimistic that encouraging results will emerge well before then.

About Us

We are a Circle of Breeders who have discovered that each of our kennels carries the NEBL3 gene or we have access to AG dogs carrying a new line to Australia.

What is NEBL3?

In Cavalier King Charles Spaniels, the NEBL3 (AG/GG) gene serves as a genetic marker linked to potential protection against early-onset Myxomatous Mitral Valve Disease (MMVD)—a leading cause of death in the breed. Understanding this genetic variation empowers breeders to make informed decisions and helps owners manage their dogs’ health more effectively.

Our Commitment

We are dedicated to improving heart health in Cavaliers by:

• Utilizing the NEBL3 gene in our breeding programs
• Implementing strategic outcrossing to broaden genetic diversity
• Sharing resources, kennel statistics, and outcomes transparently
• Building a collaborative network of breeders and guardians

Our goal is to contribute meaningful data that validates the impact of this gene, while fostering openness and cooperation across the Cavalier community.

Key Project Strategies

• Generational Roadmap: Implementing a 3–4 generation plan to integrate and sustain the AG gene across diverse pedigrees.
• Data-Driven Breeding: Using ancestral lineage databases to guide precise genetic decisions.
• Collaboration: Partnering with breeders worldwide to expand genetic diversity and strengthen cardiovascular health.
• Transparency: Making genetic testing, pedigrees, and outcomes openly accessible.
• Education: Supporting breeders with resources and knowledge to ensure long-term sustainability.
• Partnerships: Seeking dogs with strong cardiovascular health and genetic compatibility to enhance the program.

How You Can Help

• Learn about NEBL3 and the importance of genetic diversity
• Explore bloodlines known for longevity
• Share information about our project to help educate others
• Join our puppy-raising team or holiday placement crew for AA, AG, or GG pups
• Learn how to care for your Cavalier to promote heart health

For Breeders

• Be Paid for semen or breeding dogs from diverse or international lines that meet our Policy Criteria
• Collaborate with us on the future vision for Cavaliers in 2025 and beyond
• Submit pedigrees and DNA profiles of dogs you would like considered for the program

More information

• What is the NEBL3 (AG or GG gene)?
• What is Myxamatos Mitral Valve Disease (MMVD)?
• What is a heart murmur?
• How can I keep my Cavalier healthy and improve their longevity?