Cavapoo Stud Dog Health Testing: A Complete Guide

Cavapoos are one of the UK's most popular hybrids and growing rapidly in the US. Because they derive from Cavalier King Charles Spaniels — a breed with severe breed-wide cardiac and neurological disease — health testing the Cavalier parent is critically important.

Health Tests for Cavapoo Stud Dogs

From the Cavalier King Charles Spaniel side:

• OFA Cardiac Evaluation (by cardiologist, following the MVD Breeding Protocol — must be 2.5+ years old with no murmur; parents clear to 5+ years)
• MRI for Syringomyelia/Chiari-Like Malformation (SM/CMLM) — Grade 0 preferred
• OFA CAER Eye Examination
• DNA: Episodic Falling Syndrome (EFS)
• OFA Hip Evaluation

From the Poodle side:

• OFA Hip Evaluation
• OFA CAER Eye Examination
• OFA Patella (Toy or Miniature Poodle studs)
• DNA: prcd-PRA
• DNA: von Willebrand Disease Type I

The MVD Challenge for Cavapoos

The biggest health concern in Cavapoo breeding is Mitral Valve Disease (MVD) from the Cavalier side. MVD will affect virtually every Cavalier by age 10; the question is when, and how severely.

Following the MVD Breeding Protocol for the Cavalier parent:

• The Cavalier parent must be at least 2.5 years old with a clear cardiac evaluation by a cardiologist
• Both the Cavalier's parents should have been free of a heart murmur until at least age 5

Cavapoo breeders who do not follow the MVD Breeding Protocol for the Cavalier parent are knowingly increasing cardiac disease risk in their litters.

SM/CMLM in Cavapoos

Syringomyelia (SM) and Chiari-Like Malformation (CM) from the Cavalier parent affects many Cavaliers and can be passed to Cavapoo offspring. MRI-screened Cavalier parents (Grade 0) are strongly preferred. Symptom-free does not mean clear — SM/CM is only definitively diagnosed by MRI.

Hybrid Vigor and Cavapoo Longevity

The Poodle cross may reduce (though not eliminate) MVD and SM/CM severity in Cavapoo offspring compared to purebred Cavaliers. However, hybrid vigor is not a substitute for health testing — it is an additional benefit when health-tested parents are used.

Summary

Cavapoo stud dog health testing must address the serious breed-specific conditions from the Cavalier side: MVD cardiac evaluation by cardiologist following the Breeding Protocol, MRI screening for SM/CMLM, CAER eye exam, and EFS DNA testing. From the Poodle side: OFA hips, patella (Toy/Mini), prcd-PRA, and vWD. The MVD and SM/CMLM evaluations are the most critical and most commonly skipped — their absence is a significant health red flag in a Cavapoo breeding program.