Emergency Seizures Help!!

My Chow Chow had a two or three medium to milder seizures today, each lasting about one or two minutes, each weaker in succession, and each separated by about three to five minutes. Her body jerked spasmodically, her legs moved as if trying to run, and she foamed at the mouth.

Now it could be from the heat as Chows are sensitive to the heat and it has been very hot as of late. I put a fan by her and it seems to have helped a lot.

Or it could be the food, "Kirkland Signature Lamb and Rice" but it's not on any recall lists that I'm aware of, and I have been feeding her this food for 10 years.

Or it could be that she is getting old, as she 10 years old now, and Chows are not the longestest living breed, and I've read that they are more prone to health issues than other breeds, especially as they age, and she has a number of increasingly larger cysts that the vet insists are not unusual and very likely benign.

Note she has often foamed at the mouth when in contact with other dogs (gets her stressed I would imagine) so the combination of stress and heat causing this foaming would not be wholly unexpected.

I am think that taking her to the vet would simply cause increased stress, but getting her off the "Kirkland Signature Lamb and Rice" dry food and onto an all natural cooked diet in combination with the cooling fan might be my best bet.

BTW although it has been particularly hot as of late, today is not overly hot, but I suppose the effects of excess heat on an older dog with such long hair might be cumulative. She has never been happy in the summer despite the fact that I shave her down every spring and has only been truly happy temperature-wise when her belly is resting on the snow.

I suppose also she could have been suffering from a heart attack.

Oh I forgot to add, the last few years she has slowed down immensely (and she was never that active a dog to start with) and it's clear she has arthritis (and related joint pains) so much so that some times she cannot get up to walk. And yes I have tried various remedies to no great avail, but I wonder if it's related to the seizures?

I am very saddened over this turn of events for my wonder-dog Daizey.

I Goggled "dog seizure" and got this:

http://www.google.ca/search?hl=en&q=dog+seizure&meta=