Compared to humans pet responses to chemotherapy have very less side effects. The type of cancer the animal is affected with helps us to judge the pet response to chemotherapy. The pet response to chemotherapy does not only affect the cancer cells but also affects all other cells that divide rapidly. For the pet response to chemotherapy, chemotherapy drugs are only generally prescribed. The pet response to chemotherapy is very quick and with proper treatment the disease gets cured within very few days. While undergoing chemotherapy and danger for pets are a main concern among the pet owners. There is no much danger for pets undergoing chemotherapy treatment almost more than half the percentage of animals undergoing chemotherapy successfully get cured. They go into remission that is they don’t get cured and helps the pets live a better quality of life. The treatment for cancer may be chemotherapy and scent and dogs can smell the cancer cells. Especially ovarian cancer which has higher mortality rate can be detected by dogs as they can smell cancer cells. They have a special feature to recognize the scent of the cancer cells. It is also proved by recent studies.