A study of 86 dogs with brain tumors was undertaken. The study was published in PubMed and explained that “The median survival time for the 86 dogs was 1.0 month (range: 1 day-42.4 mo.). Median survival times of dogs receiving: 1) no therapy or only symptomatic therapy, 2) surgery (+/- 125I), or 3) cobalt-60 radiation (+/- hyperthermia, +/- surgery) were 0.2, 0.9, and 4.9 months, respectively.” Survival time depends on the type of tumor.
A North Carolina State study says that cancer affecting the brain is not uncommon in cats and dogs and that ” A brain tumor should be suspected whenever there is a new onset of neurological signs in an animal older than five years. It is essential to understand that brain tumors are tumors of the soft tissues of the brain, and they cannot be seen on skull radiographs.