Hi! I am working on a project that includes medical alert dogs for a certain condition, and after doing some research I have confirmed that in most cases, including seizure alert dogs, scientists still do not know how dogs can tell about seizures, some websites I looked at told me it was a "sixth sense" that dogs have so they can "sense changes in a humans aura". Anyway, my question is, if we do not know how dogs know, how do we train them to tell us when they know. If anybody knows, I would appreciate the information.