I understand cats. Even when they cannot tell us what is wrong.
With specialist knowledge, a cat-friendly approach and genuine attention, I help you understand what your cat needs.

A moment of real connectionveterinary internal medicine
Start with what you notice in your cat
From a subtle change to a complex diagnosis: find reliable information to help you decide on the next step.
Signs and symptoms
Poor appetite, weight loss, vomiting, diarrhoea, coughing or increased thirst.
Understanding disease
Clear explanations about kidney disease, diabetes, thyroid disease, FIP and more.
The senior cat
Recognising subtle changes and supporting quality of life.
Pip’s Tips
Practical ideas for nutrition, enrichment and a happy feline life.


To me, a cat is never “just a patient”.
I am Marieke: European Specialist in Veterinary Internal Medicine, speaker, cat nerd and Pip’s human. I know how worrying a sick cat can be — and how frustrating it is when you sense that something is wrong but cannot quite pinpoint it.
That is why I combine specialist knowledge with careful listening, calm observation and explanations that are genuinely useful at home.
Chief thread, photo model, quality controller and frequent interrupter of scientific reading.
When a health problem needs a deeper look
I investigate and treat cats with complex or chronic conditions, usually following referral by their own veterinarian. I look beyond a single test result or organ and consider the whole cat.
- Chronic vomiting, diarrhoea or weight loss
- Kidney disease, thyroid disease and diabetes
- Poor appetite or unexplained feeding problems
- Urinary problems, respiratory disease and FIP
- Multiple conditions in senior cats
Understanding the whole story
Cats often show illness differently and more subtly than dogs. A cat-friendly approach, listening carefully to you and thoughtful clinical reasoning can make a real difference.
My goal is not only a diagnosis, but a realistic plan that fits your cat and your life together.
Specialist knowledge should not stay behind closed doors.
I write for cat owners, teach veterinarians and speak at international conferences. The science may be complex; the explanation does not need to be.
World Feline Congress 2026Start reading
Written from specialist expertise, without needlessly complicated language.
Is your cat coughing?
Why coughing is usually not a hairball and when further investigation is needed.
Read the article →Chronic enteropathy
What ongoing vomiting, diarrhoea or weight loss may mean.
Read the article →High blood pressure
An often silent condition that is especially important in older cats.
Read the article →