guinea pig death

Question
HI, I have just witnessed my guinea pig have a seizure where he was rigid but his legs were shaking then he died before I got him to the vets. I noticed upon closer inspection that he has a white foamy gunk coming from his anus and eyes. I am worried because we have 2 other guinea pigs. could it be something contagious?

Answer
No, this isn't something contagious. Nor is it a seizure in the true sense of the word. Sadly what you witnessed was the process of the death of an animal. The foamy gunk in the eyes is a product of stress. And just as with humans, many times as they take the last breaths the body expells fluids.  

There is nothing you need to worry about with your other pigs.