California
UC-Davis
http://www.vetmed.ucdavis.edu/vmth/small_animal/oncology/studies.cfm

Colorado
Colorado State University Animal Cancer Center
http://www.csuanimalcancercenter.org/clinical-trials

Connecticut
Veterinary Oncology and Hematology Center
http://www.oncovet.com/vohc-clinic.htm

Illinois
University of Illinois - Urbana
http://vetmed.illinois.edu/vth/MedServices/ClinicalTrial/ClinicalTrials.html#Oncology

Indiana
Purdue University
http://www.vet.purdue.edu/pcop/clinical.html

Missouri
University of Missouri
http://www.cvm.missouri.edu/oncology/current.html

New Mexico
Veterinary Cancer Care
http://www.vetcancercare.com/research.php

New York
Animal Medical Center
http://www.amcny.org/technology/ctdnaMelanoma.aspx

North Carolina
North Carolina State University
http://www.cvm.ncsu.edu/vth/clinical_services/onco/studies.html

Ohio
Ohio State University
http://vet.osu.edu/2743.htm

Pennsylvannia
University of Pennsylvannia
http://research.vet.upenn.edu/vcic/CurrentClinicalTrials/Oncology/tabid/2196/Default.aspx

Tennessee
University of Tennessee
http://www.vet.utk.edu/studies/index.php

Texas
Texas A & M University
http://www.cvm.tamu.edu/Clinicaltrials/CanineClinicalTrials2.shtml

Wisconsin
UW-Madison
http://uwveterinarycare.wisc.edu/rdvm/trials.htm

Multiple States

Animal Clinical Investigation
http://www.animalci.com/trials

Center for Cancer Research
http://ccr.cancer.gov/resources/cop/trials.asp