blasto can do just about anything, but is very rare. the chances of having 2 dogs w/ it is almost impossible.
Seizure at that age of 2 epilepsy would be the most common cause and is genetic.
as afar 5 month old. distemper would be high on my radar, as well as liver problems like shunts.
Hypoglycemia can cause seizure in a young dog like that also.
could very well be looking at different dz causeing simular symptoms.
tough to say w/o all the facts, blookwork and ect. sending the one off to MSU was a great idea.
If they are coon dogs you might look at this dz it is rare, but i have seen it in dogs used for coon hunting.
http://www.petwave.com/Dogs/Dog-Health-C...-Paralysis.aspxtick born dz can cause simular type signs so if they had a heavy tick burden i would look at rocky moontian spotted fever, or erhlichia.