If your Spitz has recurring coughing or a change in breathing, arrange veterinary advice before planning a mating. Do not assign a cause from the sound or request only a certificate. The vet needs details of actual episodes and earlier investigations.

A breed label does not explain a cough
Cornell lists Pomeranians among breeds affected by tracheal collapse; heart and other airway conditions can also coexist. Recognising a description of the cough does not establish the diagnosis.
Avoid presenting “all Spitz dogs do that” as the explanation. Describe when you first noticed it, whether it recurs and what the dog was doing. Show an existing video if available. Do not deliberately provoke coughing to record it or test advice found online.
[1] Cornell University College of Veterinary Medicine — Tracheal collapse
The trachea: an airway problem
In tracheal collapse, weakened support allows the airway to narrow during breathing. This concerns the airway, not a heart valve. Because narrowing is dynamic, one radiograph may miss part of the problem. Fluoroscopy shows movement; endoscopy permits an internal airway examination.
The diagnosis also guides everyday changes. Managing excess weight and reducing smoke, overheating and collar pressure can limit aggravating factors; medication is tailored by the vet. Improvement does not mean the condition has permanently disappeared or that strenuous exercise is a suitable way to test the dog.
[4] American College of Veterinary Surgeons — Tracheal Collapse · [7] VCA Animal Hospitals — Tracheal Collapse in Dogs
The heart: valve disease and failure are different stages
A degenerating mitral valve allows blood to flow backwards into the atrium. A murmur may precede obvious symptoms by a long time. If congestive failure develops, fluid accumulates in the lungs, causing faster breathing, breathlessness and sometimes coughing. A murmur or cough alone does not establish pulmonary oedema.
Heart and respiratory problems can coexist. Descriptions such as cardiac cough or only the trachea therefore need evidence. Breeding decisions require a diagnosis, stage and assessment of everyday function, rather than a medicine selected because an online video sounds similar.
[5] Merck Veterinary Manual — Myxomatous Atrioventricular Valve Degeneration · [1] Cornell University College of Veterinary Medicine — Tracheal collapse
What echocardiography, ECG and radiographs show
Echocardiography assesses cardiac structures, valve function and blood flow; ECG assesses electrical activity and rhythm. Chest radiographs help evaluate the lungs and heart size. These tests complement one another. Valve disease treatment depends on its stage, while repeated examinations establish changes over time.
One reassuring result cannot necessarily answer every question. A normal rhythm report, for example, does not describe valve condition. Ask the vet to connect each investigation to its purpose: locating the cause of coughing, assessing dangerous breathing changes and deciding what must happen before reconsidering breeding.
Prepare a short observation history
Record whether an episode happened at rest, during a walk, with excitement, around food or while travelling. Note the date, approximate duration and what happened afterwards. If unsure what you observed, describe the event without choosing a medical label.
Identify the cardiac record you are reading
OFA Basic and Advanced are different schemes. Advanced requires a cardiologist, includes echocardiography and its adult-onset clearance lasts one year. These conditions are not automatically the requirements of every club.
Ask for the scheme name, examination date and method. Match the dog's identification. If an owner says “heart checked”, request the actual result and establish which question and point in time it addresses. Ask your vet what is appropriate now, particularly when observations have changed since an earlier examination.
[2] Orthopedic Foundation for Animals — FAQs: cardiac examinations · [3] Orthopedic Foundation for Animals — Cardiac Disease
Know when a scheduled appointment is too late
Difficulty breathing, blue gums or tongue, or fainting require immediate veterinary attention. Cornell lists these as potential signs of a respiratory emergency. Seek help first; the discussion about breeding paperwork can wait.
[1] Cornell University College of Veterinary Medicine — Tracheal collapse
Leave with a clear next step
Ask which questions have been resolved, which investigations are being considered and when to revisit breeding. Do not change prescribed treatment yourself to accommodate a trip. If the plan is postponed, tell the other owner what changes operationally without distributing the entire medical file to everyone involved.
- What has been established and what remains a possibility?
- Which records or observations are still needed?
- When should we revisit the breeding plan?
- Where should we seek help if the condition changes at night or during travel?
Sources and further reading
- Cornell University College of Veterinary Medicine — Tracheal collapse ↗
- Orthopedic Foundation for Animals — FAQs: cardiac examinations ↗
- Orthopedic Foundation for Animals — Cardiac Disease ↗
- American College of Veterinary Surgeons — Tracheal Collapse ↗
- Merck Veterinary Manual — Myxomatous Atrioventricular Valve Degeneration ↗
- Cornell University — Leaky Valve Disease of Older Dogs ↗
- VCA Animal Hospitals — Tracheal Collapse in Dogs ↗
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