[header] How to care for a dog with brain cancer [title] Talk to your vet. [step] If you dog has been diagnosed with brain cancer, you should discuss different cancer treatments with him. He may also recommend you see a veterinary oncologist, who is a vet specialist that deals with animal cancer treatments. 
Discuss all the different options with him, since the treatment will vary depending on your specific dog's case. [substeps] Your vet or the vet oncologist can also offer insight into what the treatment will entail, what your dog will go through, and how much it will cost.