A 3-year-old boxer comes into the veterinary practice, and t…

A 3-year-old boxer comes into the veterinary practice, and the owner states they were on a walk when the dog suddenly appeared weak, then fell over. It was unresponsive for 10–15 seconds and then recovered and seemed normal. The owner states that the dog did not thrash or lose control of its bladder or bowels. What condition may have occurred?