Many studies have been done and many results have been established for studying cancers in human and the ways of treating it. However, one thing that remains relevant is the study model that is used to diagnose, cure or conclude treatment methods for human cancers. The scientists have tried some ways to link the data and tried to analyze the malicious disease in various animal models in order to solve the problem for humans. Out of all the models, scientists have preferred dogs as the most suitable model and conducted studies on them. Our article will review the reason for preferences given to dog as a study model and what the previous studies have tried to conclude by considering the dreaded disease in dogs. Our article has focused on most of the recent observations and tried to elucidate the reasons/preferences for studying cancer disease in dogs (scientific name; Canis Lupus familiaris). We will also talk about the idea of comparative oncology programs that many centers adapt in order to study the disease called cancer.