The Veterinary Cancer Society
http://www.vetcancersociety.org/
The American College of Veterinary Internal Medicine
http://www.acvim.org/
The American College of Veterinary Surgeons
http://www.acvs.org/
The Comparative Oncology Research Exchange at Cornell University
http://www.vet.cornell.edu/cancer/index.html
The National Cancer Institute and the National Institute of Health
http://www.nci.nih.gov/
The American Cancer Society
http://www.cancer.org/
The Memorial Sloan-Kettering Cancer Center
http://www.mskcc.org
The University of Colorado Health Sciences Center
http://www.uccc.info
The AVMA Vaccine Associated Feline Sarcoma Task Force
http://www.avma.org/vafstf/
The Association of Cancer Online Resources
http://www.acor.org/
The Susan G. Komen Breast Cancer Foundation
http://www.komen.org/
The Brain Tumor Society
http://www.tbts.org/
Cancer Care
http://www.cancercare.org/
Ronald McDonald House Charities
http://www.rmhc.com
Animal Cancer Care
http://www.animalcancercare.com.au/
Animal Cancer Institute
http://www.animalcancerinstitute.com/index.html