Reasons my dog had a gran mal seizure that are not epilepsy?

I had a dog with epilepsy, Tucker. He died at 5 years old from a reaction to potassium bromide which we had added to his treatment regimen because he had cluster seizures that were increasing in spite of high doses of phone-barbital that had started to cause ataxia. The day of his death is probably the single most horrendous day of my life…I am not exaggerating when I say I spent about 4 hours straight holding an oxygen mask to his face…

But that’s not the topic…I offer it to let you know this ain’t my first rodeo.

Here’s the deal: my darling little blue pit bull, Zusje, who had her second birthday on March 18 and aside from skin allergies is insanely healthy, just had a big, fat, foaming-at-the-mouth pissing herself gran mal seizure a couple of hours ago. (On my BED…fuck, gonna have to get plastic sheets…) I am grateful I had Tucker, otherwise I would have freaked out completely, it’s very distressing to watch. But I have lots of experience.

So reaching into my rusty bag o’ canine epilepsy knowledge that I obsessively acquired during Tucker’s 3 years of seizures (which were probably caused by a blow to the head that also blinded him in one eye when he was 6 weeks old) I recall that congenital epilepsy generally surfaces at around 2 years old. Oh shit.

But I also recall, without any ready detail, that seizures can be caused by lots of different things.

Zusje and Preston got outside the gate last night for about 20 minutes. I have no idea if she ingested anything during that brief period, or if here is any substance she could have ingested that would lead to a seizure 8 hours after the fact. I also treated them both with Frontline a couple of days ago, but she’s been treated about three times previously so that seems unlikely as a problem.

So what are some other possibilities? I also recall that there’s no way to be sure at this point, after a single seizure, whether she has epilepsy or not. She may never have another seizure in her life, she may have another an hour from now, a week, a year… It’s a big question mark. But I also recall that the more seizures they have, the more likely they are to have seizures…so I’m wondering if I should give her some phenobarbital starting now. (I have a boatload leftover from Tucker. And it’s stable…check with the Defense department re: expiration dates on drugs) How many seizures do I wait and see for before treating? Probably at least 2, I guess…but Tucker just kept getting worse so I’m a little paranoid about it.

Anyway, what might some other reasons be?

Severe dehydration?
Heat stroke?
Insect bite?

my 10 year old dog had seizures , vet was pretty sure were due to a brain tumor. We could have done an xray or even MRI but we did not . She only lived another few months.

(BTW we have one of the few animal MRIs in America right here at NC State vet school)

Low blood glucose is a common cause of seizures in dogs - but it is usually toy breeds.

I have had dogs seizure from choking and heat stroke. In both cases it was a one time thing.

yes I had a dog with low sugar have seizures. Sadly that was due to lots of tumors that were putting out a ton of extra insulin. She was a golden , not a toy breed.

Choking? You might have something there…Ever since she was little Zusje has had issues of some kind that cause her to…damn I don’t know how to describe it. The word my brain wants to use is horking, but thats not exactly right. Its a reverse sneeze, I guess, but hers get really intense and kind violent sounding, she’s so small, yet the sounds she makes could easily be coming from a dog three times her size. She’s extremely lean and muscular, yet she is a serious snorer.

I’m sure that she was doing her horking thing right before she went into the seizure. She wasn’t doing it as intensely she has at other times, but perhaps that’s it… She finally horked her brain into a temporary fritz!

Do dogs get apnea?