All symptoms
Lumps or swelling
Size, speed and location do not reliably separate harmless lumps from serious ones. A needle sample usually does, and it is quick.
This page points to vet-written guides. If a sign is sudden, severe or worsening, contact your vet rather than reading first.
Guides that cover this
Why lumps need testing rather than watching, and how canine cancers are graded.
- Mast cell tumours in dogsCondition guide · CancerOne of the most common skin tumours in dogs — some are cured by surgery, others behave aggressively. Testing is the only way to know.
- Splenic haemangiosarcoma in dogsCondition guide · CancerA malignant cancer of the spleen that can bleed slowly or rupture suddenly. Early diagnosis and prompt care make a real difference.
- All cancer guides in the Health Library