dogs are not trained to sene seizures, seizure alert dogs have the natural ability to do so, they are in very short supply because of this. the dogs that can already sence them ar then trained to be able to help the person, and are tought a specific way of alerting the person so they can find a safe place to go lay down till the seizure is over(the dog is also trained to stay out of the way once the person is safe) I agree a seizure alert dog would be very helpfull but they are in very very short supply. so sorry about what happend, I hope you will be ok