A seizure or ‘fit’ occurs when an animal (or person) becomes unaware of their surroundings, and begins to shake, paddle, or convulse. Barking and howling can also occur. Bladder and bowel function may be lost. The lack of awareness may continue for some time. Often, the body temperature rises rapidly during a fit. Do not approach your pet during a fit. Urgent veterinary attention is required, once it is safe to approach your pet.