Anyone experience their dog acting hyper, whinny, trying to hump things, perseverating on other people or pets after starting Keppra for seizures? We started Caspian on Keppra last week and his behavior changes in the evenings. He will obsess on violently shaking pillows and trying to hump them, he gets super whinny around the cats, he will sit there and bark at us while we watch tv, he pants and paces. Wondering what's going on and if this will pass! Any insight on this? Thanks!