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A guide for newly diagnosed dogs · Updated August 2026

Your dog has cancer. Start here.

A cancer diagnosis is frightening, and the internet makes it worse: too much noise, too little that is both honest and readable. This is a calm, plain-language guide to understanding your dog's cancer, weighing the real treatment options, and deciding what is right for your dog. Every claim is cited to the research, and where the evidence is thin, we say so.

1 · Just diagnosed
Steady yourself and protect your options first.
2 · Understand it
What this cancer is and how it behaves.
3 · The options
Surgery, chemo, immunotherapy, and what each really buys.
4 · Decide
Read evidence honestly; ask better questions.
5 · Find help
Oncologists, trials, and support.

If you were just diagnosed today

Two things matter in the first days, before any treatment decision: understanding what you are facing, and preserving the option to act. Start with these.

Guides by cancer type

Deep, cited guides organized by diagnosis. Each pillar walks you from what the cancer is through the full range of treatment options.

Understanding treatment and vaccines

Cross-cutting explainers that apply across cancer types, for when you want to understand how the newer options actually work.

Read the evidence honestly

The single most useful skill for a cancer decision is telling a strong result from a weak one. Our guides label every claim by the strength of its evidence, and cite the primary source.

Get help and look things up

When you need a specialist, a clinical trial, help paying for treatment, someone to talk to, or just a plain-English definition of a word your vet used, start here.

About RosieVaccine

We build personalized mRNA cancer vaccines for dogs.

RosieVaccine designs vaccine candidates; we do not provide veterinary care. If an authorized research protocol proceeds, your dog's treating veterinarian would decide whether taking part is clinically appropriate and would administer any investigational product, within an established veterinarian-client-patient relationship. No product is licensed or currently available, and there is nothing to purchase. If you want to follow the work or explore a research collaboration, you can register your interest.

Register research interest → Read the evidence →

Spotted an error in this guide? Request a correction · How we source and review

Important

This guide is for general educational purposes only. It is not veterinary medical advice, and it is not a claim of clinical efficacy for any treatment. RosieVaccine is a research-stage design service; there is no licensed or available product. Survival statistics are population results and do not predict any individual dog's outcome. Do not start, stop, or change your dog's care based on this guide. Every decision belongs with a licensed veterinarian who has examined your dog.