It depends on where the tumor is and what kind of tumor it is. Those in the bone are more difficult to treat than those in the muscle, and those in the muscle are more difficult to treat than those in the skin. Some times surgery coupled with chemotherapy can give much wanted time with a pet. Depending on location, surgery alone may actually be curative. Highly malignant tumors may return or spread regardless of the type of therapy and may eventually lead to the pet’s demise. However, treatment will often lead to a longer period of quality life than the decision to do nothing or euthanize at the initial diagnosis. Unfortunately, cancer may lead to death, but at the Sanctuary we initially consider all treatments that may extend quality life before resorting to euthanasia.