What it is
Every tumour starts with cells that stop following the body's rules: they divide when they should rest and do not die when they should. A malignant tumour can push into the tissue around it and send cells through the blood or lymph to other organs, which is why both where it starts and how far it has spread matter.
Cancer is linked to age above all, because cells have had more time to collect damage, but young dogs can be affected too, and inheritance plays a part in some forms.
The best habit you can have is to know your dog's body: run your hands over it while stroking or brushing, note any new lump and keep an eye on weight, appetite and energy. A dog living with cancer can still enjoy walks, food and company, and its comfort guides everyday decisions you make with your vet.
Signs you may notice
- A new or growing lump
- Unexplained weight loss
- Poorer appetite
- A sore that will not heal
- Less energy than before
- Unusual bleeding or discharge
You may feel a new or growing lump while stroking the dog, or notice unexplained weight loss, a poorer appetite, a sore that won't heal, or that the dog has become more listless. Such signs shouldn't be put down to age.
When to see a vet
Book a visit for any new lump, or one that grows or changes, and for weight loss, a fading appetite or tiredness that lingers. Only a vet can tell what a lump is.
This is general information, not veterinary advice. For your own dog's health, tests and treatment, see a vet.