He has been on all sorts of medications in the past for pain control post surgery and anxiety post surgery. Things like ativan, anti inflammatory meds, benadryl, and antibiotics. He was at the vet last year after things started and they didn't find any obvious cause for his seizures threw blood work back then. I can't afford doing MRI's for a dog his size- we always end up having to go to the University to find an MRI scanner and table that will fit dogs his size and that is costly. And if he did have a brain tumor it can't be removed- not at his age would I do it anyway. I would be willing to try a medication but if it ends up causing more trouble getting him to take it then I don't know if it would be worth it. I have been accidentally bitten in the past when he didn't want to take something. He has had allergic reactions to many medications in the past as well and this may be why he doesn't like to take pills.