Animal Cancer Trust
- A registered charity in the United Kingdom providing funds for research and treatment. Includes information for vets and owners.
- http://www.animalcancertrust.org.uk/

Veterinary Cancer Society
- International professional society dedicated to the treatment of cancer in animals. Has a veterinary oncologist finder to help owners find specialists in their geographic area.
- http://www.vetcancersociety.org/

British Veterinary Oncology Study Group
- A British organization interested in research into and treatment of veterinary cancers.
- http://www.vetoncology.org.uk/

The Perseus Foundation
- A not-for profit foundation supporting research and public education about cancer in companion animals, especially that research that might also be helpful in finding new treatments for cancer in children.
- http://www.perseusfoundation.org/