After completing a schedule of oral antibiotics for a urinary tract infection ToTo now has tremors lasting only 15 seconds. He is a ten year old usually frisky Cairin Terrier. He shakes his head just before going to sleep. Sometimes he is moving his mouth as it happens. He also spends a good deal of time inspecting his meal and tossing the bowl with his nose, sometimes advancing the bowl across the room. We have tried reducing his meal to less than half a portion. He does complete the small portion often and is given another small meal later. We have another appointment for him tomorrow. We are trying the Flagyl now though he has no obvious Gastrointestinal problem. Hope someone out there can give us an idea about what is going on here. T Y!!!!