Things to keep in mind about chemotherapy: In most cases, you can stop treatment even after it’s started if it is not working or you change your mind. Chemotherapy is expensive, but you pay for each treatment, not in one lump sum, and some veterinarians offer payment programs such as Care Credit to further reduce the financial hardship.  If you have pet insurance, that will also reimburse you for some of the costs of treatment. Dogs receive a much lower dose of chemotherapy drugs, so they tolerate it much better than humans and often have few side effects. Earlier treatment often results in better outcomes. While chemotherapy is often a very effective form of treatment, it is not the ONLY treatment.  Be sure to find out about all treatment options for your dog.