Many veterinary colleges conduct clinical trials. Below is a listing of all the veterinary schools in the United States and Canada. Contact the nearest school to see if they are conducting a clinical trial on your dog’s ailment(s): Note that some sites may take you directly to the Animal Cancer Center, but slight modification of the address in the web browser address bar should get you to their main page. Most of these sites have a menu bar to the left or at the top of the page and links to the research program should be clear.
The schools with asterisks (*) by them are participating in the National Cancer Institute’s Comparative Oncology Trials Consortium, they have veterinary oncologists on staff and may be conducting clinic trials for various types of cancer.